The Detroit auto show is shaping up to be a battle between two fuel-saving titans, an update to the reigning Toyota Prius and a new kid on the block, the Honda Insight. That's a big change from last year's duel between the updated Ford F-150 and Dodge Ram pick-ups. Mercedes-Benz will also take up the enviro theme with concepts powered by electricity. We will cover the show, which runs through January 25, with blogs, photos, and video.

• Check out the slide show galleries
• Check out the video galleries