Sleeker GT Phwoar
I don't see how you can execute a moving roadblock like you suggest and still abide by the law.
Even if you get one of your mates in his jap-crap to overtake you at 70 at the same time as you overtake a truck at 68, he'll still have to move in when he's done it. You are enbreastled to do that, but you must let faster moving traffic pbutt. You can't avoid that without ignoring the law.
I think the idea is dangerous, likely to either i) have no effect or ii) be executed ilegally in such a maner as to deliberatley hinder the progress of others causing anger and frustration, which is an unbelievable stupid thing to even suggest at motorway speeds, and I absolutely think you are a complete and utter pr*ck for even suggesting the idea in a motoring enthusiasts' forum. I would have expected this kind of suggestion from 99.9% of the car-owning population, but not from anyone who has enough interest in motoring matters to subscribe here.
By all means protest, but don't you dare do it in ANY way which may deliberatly cause a dangerous situation on the roads I and my loved ones use, and expect me to endorse it.
Graeme