Sold a car a couple of years ago for 20K cash. Buyer arrived at my bank, we did the bill of sale, he turned over the 20K and I made a deposit. It was cash so there were papers but they ran all the 100 dollar bills through their counter (which detects counterfeits) and I had the money in my account then. No worry about counterfeit or being ripped off. Buyer looked the car over and left the money and his wife with my wife while we went for a test drive. 1942 Ford Fordor street rod. Still miss it.