The Auto Tractor

Early Auto Tractor utilized automobile engine's power

A touring car was backed over the under carriage of the Auto Tractor
A touring car was backed over the under carriage of the Auto Tractor. Notice the hub gear which will be meshed with a bull gear on the huge steel traction wheel; the rear wheel is raised off the ground. When fully hitched, both rear wheels act as flywheels, and the undercarriage rests on the ground. When hitched, it will be tied to the front axle of the car. The driver's seat is on the vehicle's right side.
Photo courtesy of the University of Illinois Archives