Is it possible to take out an auto loan to buy a car from a private owner who is still making payments on the?

car? I have a car in my uncle's name because I have bad credit. He's not a co-signer, it is fully in his name. The thing is, I want to move to California to be with my boyfriend. My boyfriend has really good credit and is willing to finance my car and get it out of my uncle's name, because my uncle will not let me take it to Cali with it in his name. How can he do this? Does he just go to his finance company and see if he can buy it from my uncle's finance company? Any advice is helpful! Thanks!