17 DIY Cars Hacked for Fuel Efficiency

1 of 18
greasecar baja bug photo
1 of 18

We love to see the clever, sometimes crazy, solutions people come up with to make their cars more Eco. Therefore, we've collected some of the wackiest options together in one place -- the cars both winning rallies and turning heads -- proving that a more sustainable lifestyle is just an idea away.

Vegetable Oil Powered Baja Bug

The Greasecar Motorsports Team wants to demonstrate that renewable fuels in a diesel motor can out-compete dinosaur juice. The demonstration has impressed enough people that Greasecar conversion kits now generate over $2 million annual sales. Greasecar claims customers can convert their ride in just a couple days with a basic mechanical aptitude.

Photo credit: Greasecar Motorsports