In WW1, the military forces from just about every country found out that one of the huge overwhelming problems was transportation in the soft mucky mud. Regular wheels just sank under the weight of armaments.

For the next couple of decades, the US Army and others had active programs to solicit any wild idea they could for vehicles to handle soft and rough terrain as well as carry heavy weights. That prompted a LOT of inventors to experiment with wild things--you could get government finance money to experiment and if you hit an idea they liked or could exploit in some way, you'd be rich, basically.

So, in the 20's and 30's you see a lot of these wild vehicles both because of military potential and that it was a fun field to experiment in. They tried egg shaped wheels, square wheels, odd tracks, triple wheels on axels that would index, you name it, someone experimented with it.

The dynosphere couldn't become a thing because not only they are unstable, but they're also crazy hard to steer since you really don't have any stable method of changing where the wheel is going, you can kinda lean into them to make them steer but that's about it. Not good way of stopping and turning. They spin out really easily. Terrible for off road, too slow for paved stuff.