Since the Tesla is aluminum repairs are not the same as standard steel repairs. Maybe 1 in every 100 shops is equipped for aluminum repairs. Anyone of these shops can do sheet metal repairs.
Then there are structural repairs. An Audi approved welder for the aluminum A8 is not necessarily an approved Tesla welder. So just case they say they are aluminum equipped, doesn't mean they have the right equipment to do structural repairs on a Model S.
Teslas are ONLY approved to be repaired on Carbench jig system. So if the shop has only conventional frame machines, or even Celette jigs, they will NOT be able to do correct structural repairs on your Tesla.