Revenge of the blond

A stunning blond walks in to a bank and asks for a $ 5000 loan to go to a winter vacation.
The loan manager asked her if she had anything for collateral where she threw the keys of her Rolls Royce on the desk and said you can keep my car until I pay the loan.
She gets the money calls a taxi to go to the airport where the loan manager secured a safe place to park the expencive car.
A week later the blond returns from vacation shows up in the bank and asks how much is her bill?
$ 5013, 30 said the loan manager, she pulled out cash and paid the amount.
Then the loan manager asks her, madam I don’t understand why you took a loan while it looks like you have plenty of money to go to vacation.
Yes I do have a lot of money but you tell me where can I park safely my expensive car for a week for an amount of $13, 30?