Who needs a hybrid...

...when your car might already be able to run on ethanol, a fuel that can be created from agricultural by-products such as corn husks or grass. In Brazil, the majority of cars can run on either fossil fuels or ethanol, and according to this CNN article, there's already some five million cars on the road with engines able to switch between such biofuels and your regular gas.

Might even prove to be a better solution to our oil dependency than convincing our fellow countrymen to trade in their SUV's for a Smart Car.