I'm primarily a VW/Audi/Honda/BMW fan (an odd mix i know), but I like to keep up on pretty much every vehicle I can. I say vehicle in general because I not only like cars, but trucks, buses (I even knew the specifications for the school buses I rode when I was in school), trains...but not motorcycles or planes, lol.
While I don't keep up on vehicles like I used to, I can still pick out subtle things on vehicles to determine their year and sometimes option packages on the car.
I also like touring car and rally races, but since speedvision was taken over by FOX and turned into NASCRAP 24/7 I don't really see it often anymore.