A secure power of attorney is printed with security features and used for mileage disclosure purposes in the transfer of ownership of a motor vehicle. Grant the authority to register and title vehicles to another person via the New York Motor Vehicle Power of Attorney Form.If the registrant is not the owner of the vehicle, the owner must complete and sign section 3 of the. If your former name is on the title but the vehicle is NOT registered and you need a title in your new name, you MUST mail this application. Download your DMV forms online now! You can fill out the forms before you come to speed up any wait time you may encounter. Complete the Certification in Section 6. Both parties fill out the physical certificate of title and sign it. From that point on the buyer is the legal owner of the car. 2.