From what I’ve observed, HGVs are mainly in the middle lane, driving badly.
Only feet from each other at 70 + mph.
Appalling driving.
In answer to your suggestion, I sometimes reach 70 mph, but rarely.
To be honest, what with lorry drivers, and Audi drivers driving incredibly close and swerving from lane to lane I think I’m the more sensible driver.
And safer.
Many drivers are exceeding the limit, driving too close and very dangerously.
I stay in the inside lane and away from trouble.
There’s a hard shoulder to get out of trouble in.
But not for ever, it seems.
Crazy idea, smart motorways !