Mostly in the East
Hopefully, that trend will spread westward. I checked into taking Amtrak's Sunset Limited from Houston to L.A. and found out that it is scheduled to take about 59 hours... leave Thursday afternoon, arrive Sunday morning. But people who have taken it claim that it takes several more days because it shares freight rails, and often gets side-tracked (literally!) to wait while long freight trains pass.
But the trains in the East are on dedicated tracks, so the fact that they're becoming more popular gives hope that someday dedicated passenger rails will be laid in the West as well. Texas is on the list for high-speed rail funding between Houston and Dallas.
