Maybe you do have a leaky Cube, Melting? Anything is possible. Oh and another point I'd like to make especially to the user named "none". I respect what you do with your Cube and will never ever judge you for what you do to it so please, return the favor.
If the posted speed limit is 75 and you generally do 10 over and and the police do not seem to notice or care much of your car doing 80-85, and they do nothing except fly past you at 90-100, is 15 more mph really that big of a deal for let me see, maybe 10 seconds or so before I slowed to the posted limit?
It was only a test, and they were not your friends or family in the car.
If you would like to escalate this to an all out flaming war, lets spare our fellow Cubists the anguish, and take care of this in a PM from now on, ok?