About the "articulated tandem bicycle" -- nope, not a bicycle. Yay me, I can count to three!
I just hope they used heat-treated, alloy steel, aircraft-grade bolts to attach the rear fork to the rear dropouts of the front bike. Because if one of those bolts snaps, the other one will snap too, pretty much instantly, and someone will be in a lot of pain. Unless that someone shuffles off this mortal coil -- the ultimate in pain relief.
But I'm sure they used the aircraft grade bolts. I mean, why wouldn't they?
I love how he says he has the parts to put it back to two single bikes. Sure, bend the blades out to fit the outside of the rear dropouts, then bend them back in to fit a front wheel. Repeat as many times as you like, it's not a paper clip.
Mark B