I don't recall such a "store bought" contraption from my childhood, but guys in the neighborhood were always tinkering with putting motors on their bicycles and cobbling together go-karts, etc. There was even a rumor that a kid on another block had built himself a hovercraft that actually got off the ground. From the perspective of 50+ years and a rudimentary knowledge of physics and mechanics, I now tend to disbelieve that claim.
The retro look and even the concept of the Schwinn Whizzer "Black Phantom" seemed like a good fit for an addition to the 1954-55 World on Wheels card set. I've previously done five other WoW customs (see my blog entries of Aug. 29 and 30, 2014, and Jan. 1 and 21, 2015).
As I've said in earlier postings, I could probably do a couple of dozen more World on Wheels customs off the top of my head, but I think I'll hold those in abeyance while I pursue more seasonal card projects in the baseball and football realms.
I expect that when the calendar turns to 2016, I'll be more motivated to add to my WoW offerings, as well as some other non-sports issues.