heh, about that 60’s crab drive.
My great grand-something (i never met him) unloaded a few hundred Popular Mechanics, from the 50’s through the 70’s.
One of them featured the parrallel parking system of which you speak . . . but not quite. It was indeed called crab car or something, but the main drive wheels did not actually rotate. Instead, a small set (read, 4 inche diameter) of wheels that were oriented perpendicular to the direction of normal travel lowered, and allowed you to drive the car (slowly) either left or right. It never caught on because it was buggy and expensive, and most people could parrallel park without it. Most people still can, its not that hard.
They featured several other parking systems. One I remember was a kinda forklift device. You would pull up in the spot and pay the man (or the machine, it may have been automated) and it would slide its forks under your car and park it in any of a honeycomb of spots that it controlled (it had two directions of motion.) It never caught on because of price and maintenence. And noone would let their BMW get forklifted up twenty feet by either a robot or the scruffy-looking operator.
did you know that what a company tells you is one kilobyte is only 1000/1024 of a kilobyte. And what a company tells you is one meg is really only 1000/1024 kilobytes, and so on and so forth?