Reminds me (and others) of a great movie:
State Trooper: What the hell are you driving here?
Del: We had a small fire last night, but we caught it in the nick of time.
State Trooper: Do you have any idea how fast you were going?
Del: Funny enough, I was just talking to my friend about that. Our speedometer has melted and as a result it's very hard to see with any degree of accuracy exactly how fast we were going.