My father in law sent this one in, which appears to be hanging in a museum or on display somewhere (note the track lighting). It looks as if this bike is a properly configured and constructed tandem, a professional version, perhaps, of the banana rear seat bike posted earlier today.

That green color, which looks very close to Schwinn’s campus green, is my favorite color for classic and/or unordinary bikes a.k.a. devicycles.

I’m not quite sure that my wife would approve of this bike hack, but I really like the looks of it. The tubes seem to be aluminum and are perhaps the stock this banana seat came with (see this photo for comparison). A set of old-school rear pegs completes this passenger seating area. All in all, I don’t think this additional bike seat would be too uncomfortable. Found in NYC’s meat-packing district.