I dont know if this works any more, our El Dorato (Cad) was hit broadside by a bimbette putting on lipstick.
I never should have got out of the car, with glass in my hair, and should have taken myself to the emergency room. Her insurance wanted to use recycled parts, especially the door. They also wanted their body shop to do the work, my insurance agent wanted no part of their plan, so we had the car fixed at the Cadillac dealer, I paid the deductible, and they went for "subrocation", they got their money back minus $1000 I got a good repair.