travelling the USA

I was sitting in a diner one day and started talking with an older gentleman. He said that he was a retired car saleman and knew many salesmen in the business. Now that he was retired his wife and he worked by delivering cars all over the US. Apparently there are companies out there that coordiate all this. He said they drive the car from, say, Dallas to LA, they are paid by the mile (like .15/mile) plus a per diem for hotels, food, etc. The company pays for the gas. They are also provided a bus or plane certificate to return. He said he had been to all lower 48 states and even to Alaska. I haven't followed up on this or found out anything more about it, but it sounded very intersting.