By 1950 Lionel had been using the vibrating motor in its accessories. One of the classics was the Operating Cattle Car & Corral. The vibrating motor allow the cattle with their minute "feelers" to navigate the car and corral......This vibrating principle was duplicated many times after that in the barrel loader and barrel car, and the horse corral.
Now, fast forward to the 60s and I remember these football sets were popular.
I had had one and I loved playing with it........very crude by comparison to the electronic games of today........
However, I wondered earlier today if Lionel accessories gave the toy makers the idea.......surely, there is no way to tell.......but just a thought.
Peter