Well, the obvious issue you're missing here is the fact that the steering wheel is on the right/wrong(heh) side, hugely limiting the potential for exporting your second hand cars elsewhere. Even then, I do know about a few successful businesses, where people have been exporting cars from UK to Poland, moving the steering wheel to the other side, and yet still making money in the process, the value of second hand cars is so much greater there(in the UK a car that is 6+ years old is basically ancient, in Poland that's still considered "nearly new").