Pope in the Limo

One day, the Pope is visiting and driving around in his limo when he gets an idea. "Driver? Can I drive for a while?"

"Uh...sure," says the driver. (How could he say no to the Pope?)

So the Pope takes the driver's hat and sits behind the wheel while the driver sits in back. The pope starts driving like a maniac all around town - dodging in and out of traffic, going too fast, cutting people off. Soon, a cop pulls him over. But when the Pope rolls down the window, the cop stops dead in his tracks, and goes back to the car.

"We got somebody really important here," he says to his partner.
"Who is it? A politician?"
"No. More important."
"The president?"
"No. More important."
"Who is more important than that?"
"I don't know. But the Pope is his driver."