I have so many interests that I pick up and put down from time to time and I'm wondering what everyone else likes to do with their free time. Cars are an obvious thing here but what else do you like to do? Here's some of mine.
Woodworking, especially with old hand tools, and collecting antique tools.
BMX freestyle, I lived on my bike in the 80's and can still do some of my favorite tricks. Did alot of mountain biking for a while and now I'm finding myself collecting BMX and freestyle bikes from the '80's. Yes, I do feel a bit dorky riding around the neighborhood on a 'little kid's bike' but it's nostalgic and brings me back to some simpler days and times. Enjoy your younger years all you youngins.
Building plastic car models, haven't done this since my son was born 3 years ago but I really enjoy doing it. I would put more effort into the details each one I did.
I still somehow find time to read as much as I can and work in some occasional video games.
One of these days, and it could be soon, I'm going to build a model railroad. O or HO gauge, I haven't decided but my son likes trains in a big way so it could work out to be a nice bad weather indoor father/son type thing.