You have conveniently forgotten that the intercity motorway was NOT built for the private motorist to be able to commute miles to get to better paying jobs just so you and your ilk can greedy greedy your lives whilst stuffing up the transport network... etc.
I get the impression that you'd prefer it if cars were banned from all three lanes.
Then you'd all be able to 'overtake' each other even more. I envisage seeing three HGVs: one in lane 1 at 54mph, another in lane 2 at 55mph and yet another in lane 3 at 56mph.
Seriously, is there anything to be gained practically by HGVs overtaking each other at a speed differential of one or two mph?