[Comet]

Interbank transfers are probably the safest way for both parties. I've bought a car that way. I had him mail me the title first (after we both signed the bill of sale), then once received, I wired him money and arranged for transport. He was nervous it was a scam, but I talked to his wife and she understood how it works better.

There are also escrow companies that will hold the cash until you receive, inspect and approve the car, then they send the money. But sellers I've dealt with don't like to wait and risk you not liking the car.