But Brazil has found the best solution to ease the crises in oil, it is alcohol. Alcohol could be directly substituted to the old and present gasoline engine with a little modification on the engine carburator.
bio ethanol fuel

Alcohol Fuel
Saab BioPower Hybrid Concept: World’s First Fossil-free Hybrid Vehicle
The innovative Saab BioPower Hybrid Concept, making its world premiere at the Stockholm Motor Show (March 30 - April 9, 2006), delivers zero fossil CO2 emissions, enhanced performance and a range of energy-saving features by combining the use of pure bioethanol fuel and electric power generation for the first time. As the world's first fossil-free hybrid vehicle, the Saab 9-3 Convertible show car also becomes the world's first hybrid soft-top. Read all about it on http://www.cars-and-trees.com/?p=59.