I discovered bike engins a few weeks ago. Got on several different web sites, and got to thinking that since I love to tinker and love unusual gadgets this might be for me. Now the only problem was convincing my wife. I devised myself a plan that made so much sense even to me that it was scary. I reasoned to my wife that seing as how I only live four miles from the factory that I could invest a little money and save alot over the course of the summer. Now my dodge 2500 4x4 gets about 11 miles to the gallon on a good day, that is when it is warmed up, four miles does not warm up a 5.9 gas engin. My motorized bicycle can get 100 to 150 miles per gallon. I will save at least $600 per year. I told her that I can pay for the engin kit and a used bike in less than a month. Needless to say I have a engin kit ordered and should be here any day now. I am VERY EXCITED about this project.