I live here in So Cal and I recently decided not to waste the sunshine and get solar power. I had a crew of about 3 or 4 come out to install my panels none of them older than 27 or 28. They needed access to my backyard and the only way to get that was through my garage. I opened the door to the garage and when the light came on I could swear I heard everyone of their jaws hit the ground when they saw my small layout. They kept saying how cool it was and wanted me to run it but I was on my way to work. They said the only layout they had every seen was at museums and they had never seen an O gauge setup
It is amazing at least in my neck of the woods how many young people have never seen an O gauge layout. They were just amazed at size and operating accessories. I have come to the conclusion that this hobby could grow a lot with some media exposure. I just got a text from one of the guys who is at the local shop buying his first set. I am sure most here over the age of 45 remember the commercials for trains and slot cars and just about everyone I knew had one or the other. If this was as big as the tech industry we would see some media coverage of trains of all scales. There is actually a club of N and 0 gauger's right up the road from my house but very few people know they exist. It sure is a shame especially as excited as people get when they come over and see my puny layout.
The biggest thing visitors are surprised about is the size of the trains and the operating accessories. I am more than happy to promote our hobby especially since it is not exposed to the general public out here.