Popular Mechanics crunches the numbers on alternative fuels

In this timely article, Popular Mechanics compares the cost and performance of gasoline and its alternative fuel competitors - based on a road trip from New York to California.

"How far can you drive on a bushel of corn" [Popular Mechanics]
PDF: "The Great Alt-Fuel Rally" [Popular Mechanics]

Background on the recent spike of interest in ethanol:
"Ford, GM Make Big Push To Promote 'Flex-Fuel' Vehicles" [Wall Street Journal]

Conflicting views on how much oil is left:
"The End of Cheap Oil" [National Geographic]
A site dedicated to the peak oil problem [Life After the Oil Crash]
A libertarian skeptic's take on peak oil [Reason]