A Man Is Walking Through The Desert...

A man is wandering through the desert along with his camel to bring along his food and water. When off in the distance he sees another man wandering around with nothing but a car door. The first man's camel had plenty of water so he knew he wasn't hallucinating.

A bit confused by this he asks the man:

"Why are you carrying that car door around in the desert?"

To which the man replies:

"So in case it gets too hot I can roll the widow down!"