I sold a vehicle very recently, and the buyer agreed to have it smog tested. I knew it would pass, so I agreed. However, on the buyer’s way home, the car broke down severely. The buyer now wants their money back, claiming that the sale was not valid since I did not provide a current smog certificate. I know I messed up, but where do I stand legally? I did not have the vehicle smogged, but now they have destroyed the vehicle. In an earlier question and answer I saw here on Yahoo!, it was advised to the Asker that the seller is only responsible to have the necessary emission components in place in the vehicle, but not to make the repairs, or to have it pass the smog test. Please elaborate on this.