A friend of mine found this and asked if i could put a motor on it, since it has the option for an electric motor. http://www.americanspeedster.com/sun_coaster.htm http://www.americanspeedster.com/index.htm I don't see a rear axle, I just see a chain going to the right rear wheel. The power of A gas motor would cause the cart to pull to one side or the other. All these cart styles involve the car being made from PVC. I don't see PVC holding up to the strees and vibration. You all seem to see more stuff than I do. What do you think.