How to Get Infinity MPG: Fisker's Eco-Chic Karma vs Chevy Volt

Looking for a sweet ride that can get you infinity miles per gallon? Check out the Eco-Chic Fisker Karma, a luxury sports sedan capable of 50 miles of emissions free-driving on one overnight charge. This sexy-looking sports car, which I stumbled upon at the Detroit Auto Show earlier this week, uses the same kind of technology as the lusted-after Chevy Volt. Both cars use a