I guess for me, model cars are lot more fun to build than other kits. I build
other kits too, infact I have yet to build a car kit this year. My LHS just haven't carried anything new lately that I want to build.
The thing with model car building that I like the most are the sub-assemblies. They're like mini kits themselves, they get fully painted and decaled. We use all kinds of stuff on our car kits like waxing and stuff. My car kits gets a special spot in the house