Surprisingly simple question! But a very important one.
I'll start off.
My father is a Honda mechanic, and he'd always bring back cars. More often than not, he'd have customer cars that didn't work and he fix them up for his own use. We've had multitudes of Hondas for at least 20 years + now. In fact, the Subaru Forester might be the only non Honda product we've had in ages. I remember an old Honda Accord 2nd generation hatchback, a 1st generation Civic wagon, 1st gen Acura TL, a EG Civic Si, 1st gen Integra 4 door hatch and the car that did it for me- the 1983 Accord sedan. The same car that brought me back from the hospital when I was born, which was also the same car that I learned how to drive and park in.
Honda is deeply engrained in my life.
So how did cars enter your lives?
Edit-
I would also like to add that my father often does "house calls", especially if they're customers that live by our house. More often than not it was just triage to see how bad the damage is or whether it would need a tow, or to replace a bad battery. So my father would very often tell me to come along and I'd always hold the flashlight, ask questions and stuff. It's kind of like when other dads crawl under sinks, except I got to do that with sinks and cars.
As a kid I used to devour all the books in my elementary school library, especially in the science and engineering portion. I loved those old cutaway books that talked about tanks and helicopters. My interest really didn't pick up until middle school though.
A lot of times my dad would get model cars or clothing from the local Snap-On parts supplier or other promotional goodies from local shops like T-shirts and calendars from the Toyota dealer and he'd bring it back for me (and he still does).
And of course, my dad is a massive car person, having owned a Mazda RX-3 in the past. He used to fix earth moving equipment, so he's practically been through every common wheeled vehicle, from front end loaders, buses and tractor trailers. The only things he really hasn't fixed before that has wheels are anything that flies and trains. Oh, and cranes, because he's afraid of heights.
Actually, I take back the Subaru comment- we had a Ford Escort wagon right before that- a total piece of crap that didn't last longer than 1 year. My dad drove that too hard and it threw a rod. That was the car that broke our Honda car streak.
To add to this, my dad used to drive and I used to shift for my dad in the Integra. I never looked at the tach, I got good at listening and approximating when my dad would shift (on a side note, I loved the dashboard on that Integra, it had yellow needles). I would also sometimes be able to change gears without my dad using the clutch and not grind gears. Fun car, we once loaded 1,250 lbs worth of stone into that car. And I love those popup lights, even if they were stuck permanently in the up position. I would have learned how to drive stick shift in that car had it not rusted into oblivion way before I got my license. Air bubbles would form in the carpet because the chassis had holes in it when we were running at highway speeds.