Absolutely, instead of actually fixing the problem, let’s invent muskisms like creating underground highways by boring tunnels underneath cities or ferrying said cars across long distances with a train.

That’s the public infrastructure equivalent of technical debt.

A better solution imho is to create a plan for building train capacity where it makes sense (high traffic areas where trips are such and such - Boston-NYC-Philly-DC) and fund them through public-private contracts.