Petroleum prices are making electric vehicles and engines which run on biofuels look more and more attractive with each passing day. That's why its likely to be a hot topic this election season as each presidential candidate sets out his own unique proposals to ease the country into a new era of lower fuel consumption. Biofuels may be the quickest path to lower petroleum usage, but it's electric vehicles which present the biggest step forward in clean auto technology looking forward.

Much has been made of the fact that Toyota is seemingly behind General Motors and other manufacturers in the race to adopt lithium-ion batteries as the future battery of the hybrid and electric vehicle market.