That is the problem with me and the Hornet, too easy to get silly with it, and then I come home feeling guilty about what I've just done.
My Koso speedo has a maximum recorded speed function. It has been reset a few times but currently reads 117 mph. Must have been done by someone else, Officer.
( When I first had it, I did see 140 on the original clocks, but they are optimists. Koso is accurate )