spends some time talking about how US cities used to be built around railroad lines and had streetcar tracks and how in the 1800s you could take a train anywhere:

He has no explanation for how airplanes outcompeted passenger rail for long distance travel or how buses replaced streetcars.
He then shows this map of possible high-speed rail routes for the US despite having spent the rest of the video talking about how only intra-city travel matters when talking about the size of countries:

Ironically, this map shows exactly why rail is a terrible idea compared to airport/interstates. Who wants to travel from Phoenix to Vegas by taking a detour in the wrong direction through Los Angeles? His map shows that someone wanting to travel from Pittsburg to Boston would have to stop in DC (wrong direction), Philly, and NYC. The only way to fix this would be to spend hundreds of trillions building HSR rail lines between every pair of cities (and there's a lot more cities than just the 20 shown in the map) or we could just use planes/cars instead.