GM recently launched its Live Green Go Yellow ad campaign to promote its FlexFuel vehicles. The FlexFuel vehicles run on EITHER gas or E85 fuel, which is based 85% ethanol which comes from corn. In addition to running on corn fuel, this concept is cool because its available in a very wide range of vehicles. GM's 2006 E95 FlexFuel vehicle line includes: the 2006 Chevy Avalanche, Monte Carlo, Tahoe, Silverado, Suburban, Yukon, Yukon XL, and Sierre. Awesome.