After the war, the Germans discovered that all their leading two-wheeled stroller designers had fled the country. Rebuilding the two-wheeled stroller industry would be hard, but they were determined to make a go of it, even if it meant starting from scratch.
Or something. Otherwise, I can't figure out what in the Sam Hill those folks were thinking when they strapped this kind onto an organgrinder monkey's bike and took a picture.
More description, if not more explanation: Two-Wheel Stroller (Popular Mechanics, Aug, 1950) [modernmechanix.com via dt reader jason]
"the child sits in the seat and hangs on to the rectangular frame" - this strikes me as hysterically funny for some reason. maybe because i can't imagine my 17month old actually sitting and holding on without wanting to act like the organ grinder's monkey and use this thing as a mobile jungle gym.
This looks about as comfortable/safe as that mom on a Segway looked. See how far we've come in 57 years?