They would purchase "rollers" or "theft recovery" cars with clean titles. Roller = a car frame wit VIN and title, possibly blown engine, stripped interior if car was used to race etc. Theft Recovery = stripped car, no interior, engine etc.

Clean titles made it easy as no inspection was required.

He would steal the same car, transfer parts, discard the frame. You could easily make 15k+ on one car.

Others ship cars to other countries. Same goes for motorcycles.