That's what you do when you:
a) murder someone in a stolen car and you want to remove all trace evidence
b) are told to wash your boss's car or you he fires you
c) have to hand over your car to your ex-wife after the divorce settlement
d) just declared bankrupcy and the repo man is coming
e) work as a valet and are tired of Benz owners never tipping you
f) have more money than brains and are hard up for attention on YouTube

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Wake up every day that would be a start.