Perhaps its not the scene getting smaller, but our worlds getting bigger. When I begun driving (and I'm sure most will relate), driving a few towns over to the local meet was a big thing in itself. As the years goby, we travel bigger and bigger distances, making what once was a seriously planned drive out of town now a normal everyday thing.
We see more big car shows and scenes from all over the globe, which gives the perspective that our local scenes are fading away. I thought my old Southend sea front cruising scene had died, but I recently discovered its moved to Lakeside. And there's a healthy number of V-dubs, as well as sister cars. And of course, boys in their little tin cans with tin can exhausts, revving but clinging nowhere...