I have recently come across a few electric motors (donated to me for my school's Technology Club), two from a wheel chair with gear reduction and another power window motor from a car. The power window motor has a worm gear on it of course, which is directly attached to the axle, but can be cut off. I was wondering, would either of these motors have high enough torque to be useful in making some sort of small electric vehicle? If the power window motor is powerful enough, I would want to make a mini bike with it and a chain drive to a larger gear. Since all of the label has been worn off of this motor, I have no idea what kind it is nor what torque it has, but I'm looking for a general estimate. If it's not up to this heavy task, I would want to make a small RC vehicle with it. Because the wheelchair motors are bulky and require 24 volts, I am not as interested in them as much as the window motor. I have seen plans on a bar stool racing site for modifying an electric starter motor from a car to be run continuously and, it is claimed, power one of these contraptions up to ~30 MPH. Is modifying one a realistic solution, or are there others? Thanks!