I sold my previous street rod in 2000. The buyer was from out of state and had 15K in cash so we went to my bank, and they called his bank to verify his line of credit so I could accept a check for the remainder. A person has to be so careful nowadays. I have a friend who will only accept cash when he sells a car. But I suppose someone could always use counterfeit 100 dollar bills, too. I don't know if I could tell the difference.