"What security can you offer?" the banker asked.
"My Rolls-Royce is parked out front," he said. "I will be away for a few weeks. Here are the keys."
A month later, the man returned to the bank and paid off the loan, 1017 francs with interest.
"Pardon me for asking," the banker said, "but why a one-thousand franc loan for a man of your obvious means?"
"Very simple," he replied. "Where else can you store a Rolls for a month for seventeen francs?"