With gas prices on the rise and with so many talks about development of new fuel sources, what will be the best solution? We all know that GM, Honda, etc is in development of Hydrogen fuel cells. But, is Hydrogen the best alternative? Couldn't E85 or BioDiesel be a better source for fuel? My opinion is that BioDiesel is the best replacement for gasoline. It can be put into a Diesel engine with little to no mods and can produce close if not the same power if it was filled with Diesel. But, Hydrogen is the only fuel source that doesn't add pollution to the air since it just produces water vapor for its exhaust. So what fo you think is the best fuel alternative?