The car was sold but the ownership was not transferred. The car is still the original owner and can be cancelled. You can bring a lawsuit to the court to safeguard the rights of the other party by virtue of the sales contract. After winning the lawsuit, you can apply for compulsory enforcement of the registration of the motor vehicle that has reached the mandatory scrapping mark specified by the state, has been lost, or the traffic accident has not been used in China, and the motor vehicle owner needs to apply for cancellation of registration for the motor vehicle. To cancel a vehicle, you need to take your ID card, vehicle certificate, driving license, vehicle registration certificate, and your vehicle to the vehicle management office with the vehicle registration number plate to apply.