I never said the plane was practical for a weekend getaway either. My response was that this "I want trains so people can have cross country road trips on the weekend" just wasnt practical to the majority of cases. A lot of people are saying HSR would be good for interstate trips, and yes they would. Even next state over.
But right now it's set up horrible so it is more expensive and takes longer for most even semi long trips. Like this

Cheapest and fastest route is to drive. Once you factor in everything it'll take to get into an airport and out, and you have a vehicle while your there. So most Americans compare prices to that and say it's better to just drive. It'd be nice if there was a 3 hour train that covered that for $50. Trips like that Id love