Things You'll Need
Instructions
Lie the 2-inch-by-4-inch on it's long side, line up one of the blocks directly centered between both ends, and screw the two pieces together. Repeat this process for both of the 2-inch-by-4-inch planks.
Face the two blocks toward the outside, and then connect the two 2-inch-by-4-inch planks with several screws.
Place your vehicle on the device, and notice where the front and rear bumper sit. Staple one end of the heavy duty rubber bands so that it pulls tightly on the front end of the car. Orient the second band to do the same to the rear bumper. They should be tight enough to firmly hold the car in place, while offering enough slack to release the car from their grip.