Fastest i've gone in my car is...95 mph
In a 60.
But around my neighborhood where it's 25 I usually go at least 45, one time I went 55.
But I drive a '00 Saturn SL2, so I guess thats pretty good considering my car. It's actually a lot quicker than you'd expect for a Saturn.
I've yet to get a ticket, because I have a radar detector that always works well.