Also why the US highway system was built, btw. The president who championed it, Eisenhower, was the commander of US allied forces during WW2. While there were other benefits, his goal was to be able to quickly transport troops in the event of a Soviet invasion.
Oops looks like no more movement for the forseeable future until we can get engineers to fill the crater and rebuild the track to spec. If you mess up repairs, the whole train can derail and back to square 1!
Bomb highway
Oops looks like you have to go around the crater, that might add a minute to your journey. If it's really big, you might have to take a ten minute detour until we can slather some gravel and asphalt over the hole.
you can't land planes on a railway. the interstate system in the US also doubles as emergency runways for aircraft. It's actually baked into the system on purpose.
nevermind, turns out that "fun fact" I was about to tell you all is a myth, according to the DOT.