I guess I'm the oddball, because I'm not too keen on the bike tree. No doubt it has good features, such as protection from the weather through use of a canopy. However, I think the beauty of bicycle parking lay in its simplicity. When I run an errand, I want to rack up, lock up and go. Therefore I prefer the inverted-U rack in a visible location over something that will take me awhile to figure out how it functions. For longer storage such as at work, I prefer a good locker or back room where the bike is totally out of sight. The fewer moving parts, the better. Anything that moves has the potential to malfunction. I also find the mushroom look to be a bit overwhelming.
I have to give it credit for innovative thinking, though.