Mercedes -- like a lot of other folks -- believes oil is going to run out eventually. But instead of waiting until the "Low on Oil" light comes on, the brand behind the three-pointed-star has set a goal to convert its entire fleet to run on alternative fuels by 2015. That's seven years to get off the drink we've all been addicted to for well over a century.

Click on the image to view high-res shots of the Mercedes F700 concept