I knew a few who did, I did not. Most do not as opposed to those we stopped who always had an excuse or lie thought up.
I drive a 300ZX, and have gotten out of 3 speeding tickets. Basically when the cop walked up I was upbeat and friendly, when asked if I knew the speed limit I said yes and quoted it, then admitted I knew I was speeding. They generally just asked me where I was going, (which was usually to work), I would tell them. Then they ran my lic and insurance, and came back told me to slow down a little and have a nice day.
Still haven't figured out how that worked, but hey, I am not gonna complain.