Dart is totalled.. now what ?

You need to sue this guy AND his insurance company. You will NEVER get anywhere by talking to them, being nice, or asking.

If you have anything more than liability on the car, you need to get YOUR insurance company involved.

FIRST thing you need to do, if you have not, is GET THE CAR BACK from the tow company or insurance company and IN YOUR POSSESSION. This is YOUR car until the day you get a settlement.