The boss in the used car market told me

Cars have spirits. If your car has protected you for many years without accidents,
When you're changing to a new car, prepare a small toy car, and talk to the old car: "Sorry to keep you here for a few days, I got you a better new shell."
Then hold the small toy car and circle around the old car counterclockwise three times.
When you get the new car, tell the small toy: "This is your new home, go inside,"
Then walk clockwise around the toy car three times. The car's spirit will move into the new car.
I don't know if what that boss said is true, but this whole process really comforted me.