Here's an unusual bike, the $580 Trek Lime that's just now becoming available, and it has a few distinguishing characteristics, such as its electronically controlled automatic transmission on its rear hub that's powered by a generator in the front hub. It also has a covered chain that's quite attractive, and that cover is available in six different colors, too.

And take a look at that seat—it's like a trunk. So, an automatic transmission ... trunk? What characteristic of an automobile will bicycles take on next? Cup holders?

Product Preview - Trek unveils new family of comfort bikes [Bike Gallery, via Treehugger]