A car is speeding down a winding road through the Rocky Mountains. It strikes the guardrail, throwing the driver out of the vehicle. The car tumbles hundreds of feet down the cliff side.
The police arrive minutes later at the base of the cliff. They find the driver, bloodied from the crash, and pronounce him dead. A hundred feet away, they find the crashed vehicle.
Upon inspection, they find that the windows were open, and there is blood covering the front seat.
The detective announces that someone has tampered with the scene of the accident. Why?