300ZX that only his name is on the title. Then I suggest you (or you + some friends) just go take it back when he's not around. He cant charge you with stealing it because legally you own it too and take it and hide it on him. If you no longer live with each other, he may hit you with breaking and entering but a way around it would be to convince a friend of his or his mother or someone to escort you where you dont have to break a window or knock down a door lol.