I’m guessing the car manufacturers supply scissor jacks because they’re lightweight and they don’t rely on fluids that can leak, rendering the device useless. But they really need to be more substantial than they are - especially the size and strength of the part that the threaded screw turns through!
Never seen the Beetle jack. Sounds like it had a more positive contact with the car (instead of that stupid slotted head on the scissor jack), but what about the threaded mechanism? How was it better than the scissor jack?