Your comment reminded me of a Sci-Fi novel I read when I was a kid, it was a mystery with the background being a fully automated world, a fairly central point w

Your comment reminded me of a Sci-Fi novel I read when I was a kid, it was a mystery with the background being a fully automated world, a fairly central point was that all vehicles were self-driving. Standing in front of cars to stop them was somewhere between a fad and a minor rebellion against the status quo. Ever since self-driving cars started being a thing I keep being reminded of this book, and am half-waiting for at lease that part of it to come true. I've been searching for a bit now, and I still haven't find it. I think it was from the 70s or 80s.