Car in perfect order. "Flying hood". My my.

One reason drivers fall asleep is boredom. And 55 contributes to that. Another is stupidity. If I find I am too tired, I pull off the road and take a nap.

Catty Carol, I didn't say I drove at 100mph. I said that on a clear road in modern machinery 100 mph wasn't dangerous. There is 4 times the kinetic energy to be dissipated at 100 than at 50. And 4 times at 50 than 25. And so on. The "logic" presented by Kendall is that we should all only do 6.25 mph (a brisk-ish pedestrian trot) because every time you double that speed the kinetic energy to be dissipated quadruples (standard square law curve).

Consideration is a mutual thing. If you are overtaking on a motorway doing your comfy 65 or less, (unlikely in itself, but it might happen) and I come upon you, naturally I slow down without tailgating to permit you to complete your manoeuvre. That's the consideration to which you are IMHO entitled (although I once got pulled over and patronised by a policeman in an unmarked car because I didn't abort my motorway overtaking manoeuvre and allow him - no bells, no sirens, no lights, seemingly just another car - to overtake in my stead).

The consideration you owe me is, once you have finished your overtaking manoeuvre, and once it is safe for you to do so, to pull back in.   

The interface between these two things is observation and awareness of other road users. Mirror-signal-manoeuvre. If your manoeuvre is going to affect another road user you should be aware of that before you start it, and if your manouevre is going to cause another road user to alter course or brake, you should not start the manoeuvre - but if you have right of way the other user should alter course or brake to permit you your right of way.

It's a two-way-street. As in so much of life, your "right" to do one thing may affect the "right" of another to do something else, and as in the comparison under the European Convention of Human rights between rights of privacy and the freedom of the press (or freedom of expression and defamation) the respective rights need to be balanced so that neither is absolute.

The 70 speed limit in the UK is no longer sensible and it should be higher.