The Car Tech blog

Mercedes-Benz new fuel cell research vehicle is built on its B-class platform.

(Credit: Josh Miller/CNET)

Instead of big, new vehicle launches at the Los Angeles Auto Show, Mercedes-Benz focused heavily on technology. The company brought out its next generation fuel cell vehicle, a car that lets passenger and driver view different content on the same screen, and an iPhone app that works with the company's new telematics service, Mbrace.

The 2011 Mercedes-Benz F-Cell is a fuel cell research vehicle, continuing the company's look into using hydrogen fuel cells to generate electricity to drive a car. The new model is based on the Mercedes-Benz B-class, a small vehicle with practical interior space. The fuel cells, lithium ion battery, and hydrogen tanks sit below the floorboards.

Mercedes-Benz owners can use this iPhone app to unlock their doors.

(Credit: Wayne Cunningham/CNET)

The hydrogen tanks store 3.7 kilograms of hydrogen compressed at 10,000 psi, while the lithium ion battery produces 35 kilowatts. This vehicle's range is 248 miles, getting the equivalent of 86.6 mpg. The electric motor drives the wheels with 136 horsepower and 214 pound-feet of torque, getting the F-Cell to 60 mph in 11.3 seconds.

For its production cars, Mercedes-Benz introduced its new Mbrace service, powered by Hughes Telematics. Similar to competing services such as Onstar, Mbrace provides crash notification to the nearest authorities, concierge services for navigation, and emergency roadside assistance. Mbrace also offers traffic and weather features, but most of these are concierge-based, so you will have to talk to a real operator.

Mbrace includes a smart phone app, current available for the Blackberry and iPhone, that lets you lock and unlock your car from almost anywhere in the world. The app uses a graphic of a Mercedes-Benz key, with button areas matching the lock and unlock functions of the physical key. The app also has a car location feature, which can guide you to your car if you forgot where you parked it.

And finally, Mercedes-Benz will offer an optional split-view technology for the LCDs in its S- and CL-class cars. This technology lets the passenger watch a movie, while the driver uses the car's navigation. Check out Brian Cooley's video, in which he shows how it works.

Why spend upward of $100 on a navigation app when CoPilot's on sale for $20?

At $34.99, ALK's CoPilot Live North America is already one of the least-expensive navigation apps in the iTunes App Store. At $19.99, it's an outright steal.

That's the deal ALK is offering this holiday weekend, and you can grab it starting right now.

CoPilot Live offers complete turn-by-turn navigation for the U.S. and Canada. Its features include text-to-speech (meaning it announces street names), address book integration, tap-to-call POI listings, and easy switching between different modes of travel (car, bicycle, walking, and so on).

You'll definitely want to read Dong Ngo's CoPilot Live road test that covers the highlights and letdowns--but keep in mind the app's been updated since then. For example, Ngo dings it for lacking text-to-speech, but it now has that feature.

Still missing, alas, is real-time traffic information, which apparently remains on the coming-soon list. Thankfully, future updates to the app will be free, though any premium services like traffic will cost you.

Even without that option, it's hard to pass up a full-featured navigation app for just $20, especially with competitors like Navigon, iGo My Way, and TomTom still selling in the $70-100 range.

The only missing ingredient is a dashboard or windshield mount for your iPhone. I recommend heading to a Web site like Eforcity or Meritline and picking up an inexpensive gooseneck mount.

Should you spend $220 on an app and a cradle? Check out our review to find out.

(Credit: Antuan Goodwin/CNET)

We got our hands on TomTom's Car Kit for iPhone and took it for a spin--both figuratively and literally, the cradle spins 360 degrees.

The Car Kit holds and charges your iPhone while driving, enhances GPS reception when used with TomTom's turn-by-turn navigation app, and boosts audio quality of spoken directions and hands-free calls. However, the problem with a peripheral like the TomTom Car Kit is that when it's working best, you don't notice it, which makes it difficult for many users to justify the $119 price. People may be less likely to buy it when they consider that it takes an additional $99 app to get the most out of the purchase!

Most users wouldn't bat an eye at spending $200 on a portable navigation device, but how does does an iPhone app/peripheral package stack up? Check out our full review to find out.

You can control the iPhone's music playback within the Gokivo GPS app.

(Credit: Screenshot by Dong Ngo/CNET)

You have two main options when it comes to GPS apps for the iPhone: apps with offline maps and apps with online maps. Examples of apps with offline maps are the Navigon, the iGo My Way, TomTom, or the recently added Magellan RoadMate.

These apps are excellent for frequent users as they don't require a live data connection to work. All the maps are included with the app and downloaded to the phone. However, they tend to require gigabytes of storage space and take a long time to install. If you plan on going on a long road trip, they are good fits.

If you are a casual user, however, it's better to use an online GPS application. These applications are just a few megabytes in size and therefore take a few seconds to download to the phone via a 3G connection. This means you can immediately get one the moment you suddenly need turn-by-turn directions.

The first online GPS app for the iPhone is the AT&T Navigator, which works pretty well. Unfortunately, it's only available to AT&T customers and is rather expensive ($10 per month) for what it offers. The good news is, you now have other and more flexible choices.

The RoadMate iPhone app borrows the interface of the RoadMate line of navigation devices.

(Credit: Antuan Goodwin)

As the PND vs. smartphone battle for navigation superiority continues, we're seeing more of the GPS heavyweights hedging their bets by developing application versions of their standalone GPS devices, while others push toward adding cellular technology to their portable devices in a bid to even the playing field.

Magellan finds itself in the former camp with the announcement of its Magellan RoadMate for iPhone turn-by-turn navigation application. The application is compatible with the iPhone 3G and 3GS models and will be available soon on the App Store at an introductory price of $79.99 (which will jump to $99.99 sometime thereafter).

Routing is quick, even when plotting four simultaneous courses.

(Credit: Screenshot by Antuan Goodwin/CNET)

The Magellan RoadMate for iPhone inherits many of the features that we liked when we tested the RoadMate 1470 standalone navigation device, such as the OneTouch user menu--a customizable shortcut menu that allows users to store frequently accessed addresses, POIs, and searches--and the ability to calculate and compare multiple routing options simultaneously. The RoadMate app also uses the same Navteq maps as the standalone unit. Maps and POIs are stored locally so you can keep navigating even without a data connection.

Other positive features that stand out are spoken text-to-speech street names, an oversize on-screen keyboard that's easier to use at an arm's length than the iPhone's default keyboard, native access to the iPhone's contacts list, and graphic lane guidance with digital highway street signs. In-app music control with playlist creation isn't critical to getting from point A to point B, but it's nice to have. 3D building data for major cities may be nice for users who navigate visually, but I think it's more of an eye candy thing than a truly useful feature.

Once you get where you're going, the RoadMate app automatically remembers the location of your car so you can find your way back and can switch to a Pedestrian mode for further navigation on foot.

I got my hands on an advanced copy of the Magellan RoadMate for iPhone app for evaluation and found, for the most part, that it worked as advertised. The app booted quickly and responded snappily to my inputs when tested on an Apple iPhone 3GS. A positive side effect of locally stored maps and POIs is that searching and routing with the RoadMate app is lightning fast, even when calculating four simultaneous routing options.

(Credit: TomTom)

When we took our first look at the TomTom app for iPhone, it seemed like a perfectly competent helper for getting from points A-to-B. But, we couldn't help but notice that a few of our favorite GPS navigation features were notably absent--particularly TTS instructions and graphic lane guidance.

Well, there's good news for users of the TomTom app in the form of a free update that adds these missing features, and a few more.

The update will add text-to-speech (TTS) for spoken street names and points of interest (POI) as part of the device's directions, graphic lane guidance which displays a visual representation of complex highway intersections with indications of valid lanes for the route, and a "Help menu" offering a shortcut to emergency number and directions to the nearest emergency services. TomTom is also enabling in-app iPod player control, so drivers won't have to exit the application to pick a song or playlist.

Also included in this update are a free map update and the inclusion of a safety camera database update. Users will be able to set audio warnings when approaching safety cameras or driving over the speed limit, possibly preventing citations and increasing vehicle safety.

TomTom tells us that the application update has been submitted to Apple and is pending approval. For current users of the TomTom app for iPhone, this will be a free update. For everyone else, the price of the app will remain at $99.

The PowerFuze keeps your USB devices juiced in the car and at home.

(Credit: Scosche)

You should see the mess of cables, chargers, and charging cables that clutter my backpack every day. Moving from car to car and home to work while testing a variety of devices means that iPod sync cables, USB cables, Mini- and Micro-USB cables for mobile phones and GPS devices, 12-volt car chargers, and 110-volt wall chargers eat up a good deal of my bag space. For me, this is why Scosche's PowerFuze charger system looks interesting. This charging solution should let you replace a number of cables and chargers for an all-in-one approach. It's a car charger and a wall charger. Ideally, it's the best of both worlds.

The PowerFuze system crams a few different charging configurations into one package. When you're at home, it is a two-port "Made for iPod" and "Works with iPhone" certified USB AC charger that plugs into a 110-volt wall outlet. When you're on the road, a 12-volt USB charger pulls out to take advantage of your vehicle's DC power port. If you have 12-volt DC car accessories that you want to use indoors, the vacant 12-volt port will work as a power inverter to accommodate them. With 1 amp of current split between the two channels, you shouldn't expect to power a 12-volt air compressor on the PowerFuze, but there's more than enough overhead for most portable devices.

Then again, most users only have one car, so they won't really see the point of carrying around the 12-volt charger. That little bugger will probably find itself perma-lodged into your car's DC power port after the first week--when you get sick of bringing it into the house every day. That being said, I still think it's nice to be able to pick up both chargers for one reasonable price and have the flexibility to use them together if you should decide to do so.

The PowerFuze and the PowerFuze Pro (with an included iPod sync cable) sell for $34.99 and $44.99 respectively. If you only need a car charger, look for the PowerPlug and PowerPlug Pro with sync cable for $19.99 and $29.99, respectively. Check out Scosche.com for more details on this cool little stocking stuffer.

(Credit: TomTom)

TomTom's iPhone cradle for iPhone has quietly made its way into the Apple Store. So, if you're an iPhone user with an extra $120 bucks burning a hole in your pocket for a navigation accessory (or $220, if you don't already own TomTom's navigation app), pop over to the Apple Store for a look.

According to TomTom's representative, the Apple Store product page is for preorders and TomTom has not yet announced a specific date for the product's availability. If Apple's claim that the product ships in 2-3 weeks is true, we should be seeing it soon, rather than later.

We've already questioned the value of a $120 phone cradle. The general consensus among our readers was that the price is a bit steep for an accessory, even with the inclusion of the uprated GPS receiver, 12 volt charger, and speakerphone. We'll be able to put the issue to rest when we finally get our unit in for testing.

Test-drive six 2010 VW hatchbacks in Firemint's free Real Racing GTI.

Firemint's Real Racing is one of the top-rated and most popular racing games in the App Store, but at $6.99 it's also among the priciest.

Alas, there's no lite version you can test-drive before you buy, but Volkswagen just unveiled the next best thing: Real Racing GTI, a free, VW-oriented version of the game.

Specifically, you get all the same visually stunning championship-racing goodness, but with just three tracks and half a dozen 2010 GTI hatchbacks.

This slimmed-down Real Racing offers three game modes: Quick Race, Time Trial (which lets you post race replays on YouTube!), and career-oriented GTI Cup Championship. (The full game offers more cars, tracks, game modes, etc., including local multiplayer.)

As Jason Parker wrote in his review, near-perfect controls set this game apart from other iPhone racers: "The sensitive accelerometer steering in Real Racing somehow gets it just right. This is due, in no small part, to the autobraking feature that teaches you the best speed at which to enter turns."

Thanks to Real Racing GTI, now you can experience that for yourself. Interestingly, this isn't VW's first foray into branded iPhone apps: just last month the company partnered with Fish Labs for VW Scirocco 24H Challenge.

So, now that you've had a chance to test-drive it, how does Real Racing compare with other iPhone racers you've played? Are you more likely to buy the full game?