A blonde walks into a bank in New York city and asks for the loan officer.  She says she's going to Europe on business for two weeks and needs to borrow $5,000.  The bank officer says the bank will need some kind of security for the loan, so the blonde hands over the keys to a new Rolls Royce.  The car is parked on the street in front of the bank; she has the title and everything checks out.  The bank's president and its officers all enjoy a good laugh at the blonde for using a $250,000 Rolls Royce as collateral against a $5,000 loan.  An employee of the bank then drives the Rolls into the bank's underground garage and parks it there.

Two weeks later, the blonde returns and repays the $5,000 plus the interest, which comes to $15.41.  The loan offer says, "Miss, we are very happy to have had your business and this transaction has worked out very nicely, but we are a little puzzled.  We checked you out and found that you are a multi-millionaire.  So why would you bother to borrow $5,000?" 

The blonde replies, "Where else in New York City can I park my car for two weeks for only $15.41 and expect it to be there when I return?"