Haha, most people here do tech it seems. Well, me too.
People seem to think I'd be good at maths and my entire job is like maths. I'm not and I don't view it that way. There's a lot of problem solving and engineering, but I find it very creative and expressive
Not a car, but I've got a bicycle light that does this. Turns on when it's dark and also when you brake. So definitely possible