Earlier quoted context omitted.
> That means cheaper and faster automotive transportation. That is… extremely silly. You can’t make an inherently expensive activity cheap because you’d like it to be. Cars take up so much space that’s expensive to build and maintain. They crash into things and people constantly. The pollute the air, and they are extremely expensive to own and repair, with a total lifetime measured in a couple decades, if you’re luck…
I don't think it is mathematically possible to build trains for everywhere people want to go. Fine for extremely dense areas, otherwise inconvenient and dumb.
Traffic is a hard problem. There is no single solution that fits everywhere, and you will never be able to go everywhere with your preferred means of transit. At least if you are not a major political leader such as the US president. If you are, you can just stop the normal traffic and let the peasants wait.