They've been talking for years now about how the u.s. hasn't caught up with high speed rail, due to all the property lines. Is that used for freight?
Back when I was in the rail business (brake design),
freight trains were allowed to use passenger tracks.
I expect it would still be so.
This made high speed impractical. High speed rail
would need dedicated lines that can be kept in the
appropriate condition. This would mean acquiring a
whole lot of property, ie, taking it from current owners.
This would be a slow & spendy political process.
China, for example, doesn't face such hurdles.
I'm not convinced that high speed rail is all that
necessary. We're facing technological & social
changes that could mitigate the need, eg, more
working remotely, self driving cars, the end of
the taxi monopoly (eg, Uber, Lyft).