No doing 80mph on an empty motorway with no other traffic is completely different to doing 140mph whilest racing someone in populated area. I'm taking the logical assumption that it's a populated area as I've never seen traffic lights on a motorway. You're quite welcome to correct me there if you really feel the need.
Ask anyone who's spoken to me and they'll tell you that I've always maintained that it's not speed in itself that will kill you, but the misappropriate use of it.
Anyway, if you want to continue this arguement then I'm quite happy to, but not in this thread as I don't think everyone wants to see our petty arguements.