Pint, we can do a speed test when we do the after video of my GT Mat install
Also, I use one mitt for the car, and one for the tires. However, they're only like $5 each, so I generally find myself replacing them after 3-4 washes. I always have a fresh one on hand, which allows me to do an easy comparison to see how dirty the older one really is
Lastly, I speed... a lot. But I'm a moron who doesn't think a radar detector is a wise investment
I've never owned one, I speed all the time everywhere, and yet somehow, I get tickets for less than 10 over at highway speeds (when I'm
not speeding)