How do you dispose of your old car legally so that once you dispose that car is no more in your name because the car is registered in your name?

How do you dispose of your old car legally so that once you dispose that car is no more in your name because the car is registered in your name?
It depends which country you're in ! In the UK, you simply fill out the relevant part of the log-book - and send it to the DVLA. They enter the vehicle's details onto the DVLA national database as scrapped. If the car is subsequently seen on the road, the driver will have some serious questions to answer to from the police !