My first love was building model cars going back to the early 70s. I stilll love building them - especially muscle cars but... I haven't done a single car model kit going on 3 or 4 years now. Don't know why. There's no accuracy issues building cars as opposed to building aircraft or armor kits. The lack of building car models has been a huge mojo issue as of late. I vowed myself to build / finish what I have put off. And do more since I've acquired quite a few vintage kits from Handiable a few years ago.
The reasoning why I haven't done a model car kit for sp long is because I tend to stray into the world of aviation kits. Aircrafts became my second love building them.
It all depends on my mood what I want to build. With the Viper kit I'm doing now, most definitely I'll jump on the P-51 Mustang next. After that, by late May or the beginning of June, I'll jump on car kits - finish off what I had started then maybe a couple more in the summer.
It's a hobby, not a deadline to "git'er done". Enjoy it.