I am new to the steam power game and am interested in building a steam powered vehicle. My current idea is to use a golf cart chassis, and use a 1hp steam engine from Mike Brown or such to run an alternator that would charge the golf cart batteries. So, basically, a "hybrid" steam powered vehicle (this is purely for fun, not for any real use). I would have been happy to buy a boiler, but it seems like they are all very expensive. I am therefore considering building a monotube boiler like the Lynx Steam boiler (seen here: [ame]http://www.youtube.com/watch?v=fKaIofi3bGc[/ame]) , except fueling it with propane instead of wood or the like. Is this crazy? The reason I ask is that I have not seen any of these boilers attached to a vehicle. I mean, we are not talking a fast vehicle here - several miles an hour max - but is there some safety or engineering reason this hasn't been done? I would appreciate any advice.