I normally would never tell anyone on a bike forum I have a bicycle with a motor on it, but I do! I have a Chinese bicycle engine on an old Raleigh Newport cruiser I use for Sweat less commuting. Don't get me wrong! I have several other bicycles and use them but there are times when I don't want to take the automobile but a standard bicycle would be questionable transportation option as well. This thing fills a necessary void. Starting early in 2007 RevoPower will start selling an EPA and CARB approved motor wheel which will replace the front wheel on bicycles with 26 inch wheels. I call it a motor wheel, as the engine is located in the front wheel. It's a very slick design. I have already sent in my money to reserve one. If anyone else is interested you can check it out here.