I seem to recall that somewhere in NYC there is still something like this in operation.
In Chicago, there are a couple of residential buildings shaped like corn cobs. Their parking is on the first dozen or so floors with the cars parking facing out. A steel cable restrains cars from going over the side. There is a spiral ramp on the inside curve, surrounding elevator shafts. Can you imagine being a little tipsy and driving up floor after floor in a tight spiral? I notice that no other such buildings exist that I know of.
The more I do, the less I accomplish.