Yeah.. brilliant.
1 of you.. after people just showed themselves to be unsafe idiots.. would go for the reversal and cut them off and then downshift suddenly.. and risk wrecking your car and killing yourself. The other.. when a moron tailgates you.. you go 140mph.. and risk wrecking your car and killing yourself.
There are a lot of douchebag drivers on the road.. but how you react to them is equally important. Be mature and on the defensive side as drivers. Don't get into pissing contests with retard kids in crappy cars. We're in Z's.. we're already better than them.
And now you know.. and knowing is half the battle.