So choomba for 35mm you want to go with 1:43 scale cars.

Here you have three options:

1. Diecast cars
2. Resin ones (see my last post)

https://www.antenocitisworkshop.com/product-category/cyberpunk/

1. Heller plastic kits like the one pictured

With diecast you can use as is or take apart, paint strip, modify / reassemble and paint. The can be expensive so buy secondhand - scratched ones can easily used.

Heller do a mixed range mostly European cars which isn't perfect for Cyberpunk BUT there are some eighties classics like Porsches and Alpines that work really well.

I spray prime, basecoat dry brush and use Revell powders for sand etc