[0x3f]

Where was this? I've only seen it in London at very high end residential places. Even then it's rare. Most privately-owned public car parks in London are dilapidated and full of thieves, but still command premium pricing. It would surprise me if one bothered to build the infra for this.

[beardyw]

As in the other comment here it was in the 80s, and my memory isn't up to where it was.

[tonyedgecombe]

I remember using one in Fleet Street in the eighties.