For less than $2K you can convert your Ferrari FF to run on E85, raising the pathetic 650 stock horsepower to a more respectable 875 hp. On top of that, you'll apparently cut emissions by 80%. It's the "green" grand touring supercar.

The Queen is going green, converting her two custom $15 million Bentley Limos to run on bio-ethanol, preempting an effort by Bentley to do the same for its entire fleet.