Why are they taking your car away?
A car I once owned was hit by a bus, luckily it was parked outside the house so I wasn't in it at the time.
The bus tore the rear bumper off and gave the rear quarter panel a good seeing to. The insurance company sent a guy out who wrote the car off but informed me it was a "cosmetic" write off or something and would not need to be taken off the road. I would get to keep it and get a cash settlement from the bus company should they accept liability for it (which they did as a neighbour witnessed it(god bless her) driver apparently stopped and then drove off like nothing happened.
This gave me the option to repair it and pocket some cash, which I duly did. It was an enjoyable adventure, what with the re-spraying and bumper fitting, my kind of stuff
It may be worth a shot, the car's hardly wrecked, it'll buff out!!! LOL
I would be raging right now too mate, too many crap drivers on the roads these days.
Oh yeah, I didn't have to "buy" my car back or anything, don't see why you should have to either?