Road Rage - Wonder Warrior

I hate leaving late for work, the traffic gets blocked up, if i leave at 6.30am the red route outlined is basically empty, if I leave at 6.45 the the traffic is backed up at least as far as the start of the red lines i've indicated.

The road leaving the roundabout has enough room for one car lane, the road entering the roundabout has room for 2.5 cars.

I'll let you figure what usually happens. Anyway today I'm just about to enter the roundabout and some Indo clown comes tearing up the inside lane, he had to stop right next to me (but had jumped at least a half dozen places in the queue.) So then its stop start with the car in front of me, and him trying to push his way in front of my car.

In indo its all a game of bluff, dont hit the other cars, but try and get your car as close as possible to the car in front, dont even leave a 30 inch gap that the other car can nose into.

Anyway, the inevitable happened, our side mirrors brushed, he had to give way, since he was hard against the shoulder, and I was slightly in front.

Nothing more said or down, in fact when we had brushed I'd looked over at him, and he just stared straight ahead, no acknowledgment no eye contact. Mind you he probably cannot see into my car, it has very dark tinted windows.

Ten minutes later, I am turning into my workplace so indicate early, I suddenly hear all this commotion car horn blowing and blowing, someone screaming, I look in the side mirror this same bloke is hanging half way out his drivers window wearing a shit eating grin to flip me the bird, up and down up and down like a fuckn deranged yoyo all the while leaning on his horn as he goes past me.

WTF?

Too scared to make a fuss until he knew I was gone?

Suddenly just thought of that reaction ?

He'd been stewing on it for the last 10 minutes and just suddenly snapped.

The security at my work asked me if they wanted them to stop him, but i dunno what for, extract some money, he has scratched my car after all.... but its only the plastic side mirror. I told them not to worry. I'm wishing i had not now, I should have go them to stop and detain the idiot, and I could have demanded money from him .... (well, maybe i'm dreaming, its always the westerners fault)

I was just too surprised to do anything, and by the time i realised it was me it was pretty much too late.

What would you have done?