July 13, 2011, Gas2.org
The American Le Mans Series is one of the greenest racing series in the world, with competitors running E10, E85, isobutanol, diesel, and even hybrid systems from Porsche...
Source: Gas 2.0 (http://s.tt/12Qfu)
Source: Gas 2.0 (http://s.tt/12Qfu)
Source: Gas 2.0 (http://s.tt/12Qfu)