Assembled as a tandem.
The tandem easily converts into this single.
Rodriguez (R+E Cycles of Seattle WA) showed up at the Seattle Bicycle Expo with the first ever S and S Coupling equipped single to tandem convertible bicycle. It's beautiful (my photos don't do it justice). John and Matt spent about 6 months designing it to easily convert from single to tandem or back in about 8 minutes. During the show, John packed the bike and did the conversion while folks watched in amazement.
John wanted the bike for a trip he and his wife will be taking to Europe where they plan to ride and visit friends. His wife doesn't want to ride every day so when she takes a day or two off to visit friends, he plans to ride alone on the single. John will also be doing some segments of the journey alone. His wife will take the train to a meeting point where they will convert the single to a tandem.
Model description (provided by builder)
A super cool coupling tandem that disassembles into eight sections for easy packing. If your tandem partner gets tired, bored, or runs off, the Eight-Ball can be assembled as a single. It's the ultimate in travelling convenience and versatility.