+1 I second the fly and ride method.
Done this many times with bikes, cars and one truck. Most dealers are more than happy to pick you up at a local airport and bring you to the dealership to finalize the sale. I will say that I have never paid in full prior to flying to pick up the vehicle though. I usually put down enough of a deposit that the dealer/owner will hold it until I arrive for final inspection/sale. Ive always figured that leaves me the option of walking away and finding a different way home if I discovered the condition was much worse than detailed pictures showed. Or even re-negotiating price on the spot.
Sure you would be out the deposit and travel expenses, But I wont get stuck buying a "lemon" sight unseen.