A Minnesota man who invented a rocket-powered toilet and a jet-powered coffee pot has come up with a motorcycle that runs on beer. Ky Michaelson said the beer-powered bike he created in his garage in a Minneapolis suburb has a 13-gallon keg with a heating coil instead of a gas-powered engine. The coil heats the beer to 300 degrees, then super-heated steam in the nozzles propels the bike. Michaelson said he's not a drinker so he can't think of any better use for beer than to run his motorcycle.