Seems like a single payor system might solve some of the problems...and create some new ones.. Trump needs to address this fear very soon as it impacts so many folks.
Intel has a roadmap down to 3nm, and I believe Imec does, as well. But the future is probably a combination of different packaging with faster interconnects and better throughput to and from a variety of memory types. There are a couple of ways to drop the heat. One is a different transistor structure, which may allow for a sharp reduction in voltage (0.1 or 0.2 volts vs. 0.7 to 3.5V). The second way is to use silicon photonics between chips in a package, which is coming one of these days.
I AM concerned about autonomous cars, however, I'm even more scared of human drivers. Texting, drunk driving, distracted driving, and so much more. We've seen the path of destruction. Can autonomous cars be worst that than? I doubt it