I think it's awesome how you reminded him that he didn't have the car he wanted because of HIS choices. I'm just worried that as soon as you move, with no actual divorce in progress, and no legally binding alimony/CS required, he's going to find it inconvenient to continue sending you money.
I think my W is kind of the same way, about being too lazy to finish the divorce process. This whole process was devastating to me, and the idea of pushing the D was, at the time, unthinkable. The good news, that I think you will find relatable, is that now, with distance and time, I am stronger, no longer want this hanging over me, and I am the one pushing it forward.
M:23 T:26 Me:53, Wife: 60 S:18 D:16 filed 7/16 W moved out 4/28/17