[balrog666]

higher-speed freight rail system can free the interstates of many long-haul trucks

Really? How do you know what the fianl cost tradeoff analysis will be? Especially, when there are NO REAL EXAMPLES of a high-speed freight rail operating anywhere in the world.

[Publius]

High(er)-speed freight rail operates in Europe. At least it's higher when you compare it to travel on their roads.