However, Volocopter seems to be further with their product development, while there are serious doubts if the Lilium concept works at all.
Here are videos of recent test flights:
https://www.youtube.com/watch?v=0idI3sJJKZw
Also, Joby, Ehang, and Volocopter are much further ahead in the sense they have done point to point or are building out the factory (same time last year Ehang got hit by being called a scam by Citron, however).
From what I read, rumor is the big issue is battery density which is holding Lilium from being viable. We shall see!
Also, Joby is most likely the one to look at to track the progress of this air taxi segment since they have just Spac’ed and their aircraft is the most conventional.