It's time to tell you about binoculars as the best cop prevention tool invented. Ask the wife to use them while you're testing the car's top end speeds and she'll be able to peg a cop 5x further away.
Now if she gets motion sickness, it's not my fault. I don't recommend driver's using binoculars, by the way
Now get back out there and push that car well above 125 so you can say you did it!