Basically, I am looking to buy some cheap motors. Basically, I am trying to build a small 1 person car that can drive on the sidewalk. Trying to find out the best and cheapest small motors. Preferably with a throttle. These motors would only need to move 250 lbs at 20 mph or 30 mph. I want gasoline or electric motors but basically any kind of motor I am open to alternatives. If electric then what battery do I use, I dont want to use a car battery but a strong battery I can plug into walls. If this belongs in engineering forums I am not sure, but please move it there if so.