Lextuned....for that mileage and recent Lexus maintenance I think you did fine, If you are happy with the car. Forget litigation as it is just not worth the trouble. The way they fix cars today is way beyond what we put up with in olden times...LOL... ;) Enjoy it and the damage, rear quarter panel, is just a minor reflection on the Lexus as a whole. If it had air ride I would be worried. Since that is not the case..your good to go another 300k. Love heals all wounds... IMHO