"decent joke" joke

On his way to JFK to fly to Zurich, a businessman stopped off at a bank in
downtown NYC and asked for an immediate loan of $5, 000. The loan officer
squinted, needing collateral. "Here, take the keys to my Rolls," the man
offered. The loan was promptly issued, and the car was secured in the
bank's underground parking area for safekeeping.
Two weeks later, the man returned to settle up his loan and reclaim his
Rolls. "That will be $5, 000 in principal plus $15. 40 in interest," the
loan officer reported. The man wrote out a check and started to walk
away.
"Please, sir," the loan officer interjected, "while you were gone, I found
out that you are a multimillionaire. Why in the world would you need to
borrow $5, 000?"
The man smiled. "Where else in Manhattan could I find secured parking for
two weeks for only $15. 40?"