Popular Science is a pretty reputable publication. It's all right there in the name: This is strictly the most popular science around, folks. None of that weirdo, mascara-wearing fringe stuff allowed at this Science Prom, sonny. If there's going to be any speculation at all within these tomes, it will be a totally reasonable extrapolation of current emerging technologies that -- aw, hell, who are we kidding? The only difference between old-timey Popular Science and B-quality science fiction covers was a pair of heaving green breasts. Need proof? Sure: Here are the most baffling vehicular predictions Popular Science seemed really keen on at the time ...
Everything Will Evolve into One Giant Wheel
For some reason, Popular Science just could not accept that cars, trains and airplanes were actually viable methods of travel. They looked at the stable, speedy craft of the day and said "Surely these are flashes in the pan. The future is ONE GIANT WHEEL!" And then they laughed and chugged laudanum until they lapsed into a Science Coma.
And we get the appeal, really, we do: But it just seems cruel to use your Inverse Penny-Farthing of Death to mow down those tiny little dudes with their adorable toy cannons. Pick on somebody your own size, Science.
Sometimes he puts playing cards in between the spokes.
This is how much Popular Science was willing to sacrifice for our uni-wheel-based future: They were totally OK with being built into their vehicles permanently, with no possible means of exit.
Men in Black III is looking at a lawsuit from the past future.