I can honestly say that I do no more than about 120 every day I go to or from work. Not constantly but only for a few short bursts. I was lucky today though. I usually join the A120 to Chelmsford from Woodham at full pelt. Lucky enough today I carried on up the slip road instead of cutting across and was greeted by the site of the Five-0 in the outside lane.
I find that if I start to drive at the same speed as everyone else, I loose concentration and start to drift off.
I was unfortunate enough to witness the loss of a biker who hit a telegraph pole about a year or so ago. I go past it everyday and it always makes me aware of my mortality.