For you can

The power of attorney consists of various powers to manage and dispose of the machine.

It must be remembered that no matter how much authority the power of attorney drawn up on you does not include, you are not the owner of the car. Art. 105 of the Civil Code of the RSFSR states that the power of attorney gives you only the opportunity to be a representative from the owner of the car in front of any other third party. And after reading Art. 188, you can find out that a person who has issued a power of attorney for you can cancel it and transfer his car to any other, and he, in turn, can take a car from you, and will be right by law. And you can make complaints about the money paid only to the owner of the car, if you find him at that time.