Hehe,
Believe me Paul, I have tried!

Unfortunately, that "reduce by 10 mph" seems to be the way the authorities think.
Sadly, a number of drivers are unable to think of potential consequences of inappropriate speed. While my pal's car may be capable, there's no guarantee he is

Mind you, as he was happy to point out at one stage, he is not the one who rear-ended a JCB (in the dark)... At least I know my limitations at night and point blank refuse distant commute if required by my employer. That's another story altogether.