Its something we first saw in Back to the Future -- cars that run on alternative fuel such as garbage. But now it is becoming a reality that some Aggies have a hand in.

Beef liver and hydrogen peroxide or decomposing water is what powered some of nearly 30 small cars today in Philadelphia during the 10th annual Chem-E-Car competition created by the American Institute of Chemical Engineers.

Teams must calculate how much fuel to use to get to the finish line. The car that comes the closest wins.

Out of 33 universities, Texas A&M took third place, using chemicals making hydrogen gas to propel their car. Cornell University won top honors, using a Hydrogen Fuel Cell as a fuel.