The just-announced 7 series, dubbed the Hydrogen 7, uses a similar 12-cylinder engine as that in the H2R. The Hydrogen 7's engine produces 260 horsepower and runs the car to 62mph from zero in unimpressive 9.5 seconds. The car holds gas and hydrogen tanks, which the car can seamlessly switch between. The 17.6-pound hydrogen tank gives the car a 125-mile range, while the 19.6-gallon gas tank gives it an additional 300 miles. BMW plans to build a test fleet of Hydrogen 7s that will go into general use next year.