It Takes Two
Trek Lime Tandem
The "bicycle design" blog's most recent post (Dec 24) shares a photograph of a prototype Trek Lime tandem that may or may not make it to production. (The Lime bikes shift themselves) Not much info but interesting nevertheless. http://bicycledesign.blogspot.com/
I should visit the bicycle design site more often because it always has some interesting info and thoughts.
The previous entry (Dec 21) is a review with several links about an interesting foldable bike in production called Strida designed by a fellow in Britain. It uses a kevlar belt instead of a chain and has some other interesting features.
The Lime tandem could fit well into the bike rental niche at resorts.
The Hobbes listserv has a number of comments about this bike. Looks like a great rental concept (no drive line adjustments, etc.) but I'd worry about braking. As someone else noted, this bike could get newbies "up to speed" quickly, but stopping could be another matter!