I typically show up roughly 60-45 minutes prior to flight time, so 15-30 minutes before boarding. By the time I get through security the plane is typically just starting to board and I walk right on.

I have gotten my door to door times between MSP and ORD to just over (sometimes under if I get lucky on train to city) 3 hours including a 20 minute Uber on one end and a 40 minute train ride into the city on the other. Pretty similar distances involved. That's basically 2 hours from dropoff and pickup at the airports for an hour flight.

> going through onerous security

I imagine that in the US, this will be much the same. Or will be the moment after the first attack on a train. I don't see any long-term security gains here, the US is simply not Europe.

Not that I think air travel is a decent replacement for high speed rail though, it's not. The security and time delays related to that I simply think are a long-term red herring within the US. Mostly because I remember air travel prior to 9/11.

I also think comparing a single high speed rail line built in isolation to Europe or Japan isn't all that great of a comparison. In Japan or Europe I arrive in a train terminal and transfer to the local rapid transit that pretty much covers every city and every neighborhood I'd ever want to go to in a reasonable manner. The US... doesn't.