Also I don't know about Lilium but one of my biggest gripes about Amtrak and other train infrastructure in the US, besides the sheer slow speed, is the complete lack of basic human necessities at the endpoints of travel. You get off the train and get basically thrown into a dilipidated, desolate parking lot full of locked cars, next to a locked building with no food, often not even bathrooms, no rain shelter, no bus to downtown for an hour, no rental bicycles, and sometimes no signal.

That is a world of difference from Europe, China, or Japan, when you're usually thrown into a food court when you get off the train, and buses leaving every 10 minutes to everywhere you could possibly want to go. Planes replicate that drop-off experience in the US, and Lilium will need to as well in order for it to be a comfortable experience.

That goes for even for suburban trips. How do you get from wherever it drops you off in Palo Alto to say, Facebook or Google's offices? Or the thousand other companies that don't have company shuttles?