Caught speeding...

A man bought a Mercedes and took it out on the interstate late that night for a test drive. To see what she could do he decided to open her up. As the needle went pass 90 mph he suddenly saw flashing lights behind him. Thinking that a police car couldn’t keep up with a Mercedes he rapidly speeded up to 100, then110 and finally to 120 with the flashing lights still behind him. Finally, he came to his senses and pulled over. Afer a minute or two a big grumpy state trooper came up to the car and after taking his licence and registration said “I’ve had a really tough shift and this is my last pull-over. I don’t want any more paper work tonight, so if you can give me an excuse for your excessive speed that I haven’t heard, I’ll let you go.” The man said

Spoiler:

“Well, last week my wife ran off with a police officer, and I was afraid you were trying to give her back.”