One of the fun things we could do in the summer was modify our bicycles. My friends across the street, Bobby and Ellen, modified two bikes, combining them into a tandem bicycle built for two.
The folks who appear in this video seem to have followed exactly the same easy method of turning two bikes into one. Simply remove the front wheel from Bike A and place its fork over the back wheel of Bike B. You’ll have to tighten the nuts good and tight or the blamed thing will fall apart. Bobby and Ellen’s home-made tandem bike never fell apart, and I think it turned better than this one in the video.
Anyhow, that old double bike looked way cool and we all took turns riding it. But eventually Ellen wanted her front wheel back, so that was the end of that.