Car design 101:
Leet, your cars currently have their side windows going upright. (red line)
Green line shows how the side windows should slope inwards.
Oh yeah.
I wanted to do that but doing so broke the shape more than it already is .
Because the shape is literally just extrudes of /....\, moving them inwards besides that already existing half-bevel, the whole car would look even more forgeted up. On top of that, the top is connected to the bottom, that's not really a problem but it will also add more faces if I want to make it that way, and I don't really find it that necessary.