Yeah, ironically we've gotten closer now that he works so far away. Best part is that I learn more than I ever would at school, but I have a lot of fun doing it. I'd say the best thing you could do with your son is any time you're doing maintenance on your car, take him under the car with you for whatever it may be and let him take off a few bolts or something. I always loved doing that with my dad and you can take the time to teach him about nut sizes, different tools, and how to take care of his own car one day. That's how I learned about all that stuff.
