The Rail Ryder enclosed trailer self-loading tie-down system handles and secures vehicles by their wheels. By securing the automobile by its wheels we have made all cars equal. There will never be any metal-to-metal contact on your chassis with our self-loading system. Made in the USA of high quality, aircraft-grade aluminum, the car rides on trolleys that run on rails tracking in and out of the enclosed trailer straight with no scrapes or dents to your vehicle.