Nonsense. There are multiple clear corridors that public transportation makes perfect sense for. A high-speed rail line from Fort Collins down south through Denver, to Colorado Springs, and potentially as far south as El Paso, seems obvious.
The Utah North-South corridor, as well. A line going from LA-LV-St.George-SLC area also makes enough sense. Not to mention a line connecting Tucson-Phx-Prescott-Las Vegas (potentially going to Reno as well). A Seattle-Portland train makes sense. A whole PCH line makes sense.