I've seen some strange bike racks over the years, but nothing even comes close to the Bike Tree. Treehugger reports:
Rather than hitching your bike to a post at street level, swipe a smart card, enter your PIN, and your cycle is taken up the "trunk" of the tree to a dome that protects it from thieves and the elements. [continue]
Weird. Looks interesting and fun, but I bet those Bike Tree things cost a fortune.
related:
Bike Tree website