Road Rage - Understanding, Avoidance and De-escalating Situation

Wish you had installed a dashcam.
Without evidence, I'm not sure that Police would entertain a complaint.
A video evidence would've made things much better.

Wish you had a dashcam installed as suggested by fellow BHPian. Apart from this, I would urge you not to speed and enjoy atleast at nights. God forbid doing the mentioned speeds indeed is a recipe for disaster as our Highways have all sorts of animals, vehicles without lights on, wrong way drivers and what not. As for the other person, sometimes losing is more important than winning and he/she surely doesn’t understand that. As for the claim and escalating this further, I don’t think other person’s insurance would accept the claim and bare the liability without evidence and you might have to repair it out of your pocket or from your insurance. (why else do we get it for?)

120 kmph on a 6-lane Indian highway with no cars is no great speed IMHO. I generally cruise at 120 kmph as my destination are 12-13 hours away and the roads are fantastic. But will take your point to not speed at night . I will lose my No-Claim Bonus if I claim my insurance, that's what I am skeptical for. MG inspected my car today and told they have to replace the fender, repaint the door, hood and the fender. They told it would cost around 84000 - 92000 Rupees! I am in dilemma - I am not the party whose wrong here. I have asked for the CCTV footage of the highway. Unfortunately, The number TN-07C is visible, but the last 4 digits are not visible.

BHPians, will need your help on this. Much appreciated, thank you!

That's what insurance is for. If I trip on a footpath and break a leg, my Mediclaim pays - it is meaningless to try to get the money from the government agency tasked with making that footpath. Some unknown person dents my car and disappears, my car insurance pays. If the claimed amount is far higher than the NCB, ir makes sense to claim. Otherwise pay from your own pocket.