Cars - will it ever end?

I am pushing myself to draw and paint cars more. I feel that's the only way I will ever be able to incorporate them in my art. But it's hard!! Full disclosure - I traced these cars below, because I wanted to get a feel for what it would be like to paint them without having to obsess about each angle . So the cars and the road, they kind of look alright. But the houses and the sky are way way too heavy. Conclusion? My brain can't focus on two things at the same time. And second conclusion? Gouache is useful, until you go too far with it!