Popular Mechanics senior automotive editor Mike Allen joins me for a fascinating journey through world of alternative fuel sources, from ethanol to methanol to biodiesel and hydrogen -- a must listen for anyone tired of watching the meter whir at the gas pumps. Plus, the winner of the 2006 National Guard Great Race talks about his winning run, and we solve the case of the amazing exploding laptop computer. By the way, the organizers of the Great Race are now accepting entries for the Great Race World 35,000km. Starting in New York on February 12, 2008 and ending at the Eiffel Tower in Paris, the competition is open to both classic cars and new and innovative 'green' technologies. The latter class, called the Innovation Technology division, will be racing for a $1 million Innovation Prize. Entries are due by December 31st, 2006 at greatrace.com. Less