Dan Sheppard gurgled happily, sounding much
like they were saying:

Surely there are already metal poles in the ground wired for electricity
in many car parks?

Not in the one at the back of this office building.

Perhaps it would make more sense to feed these poles at, say, 11kV and
give them each 1/3A. You may want to transform that down in each pole,
or else provide a safety interlock in the connector.

That'd certainly be an effective way to ensure people learn to park
without ripping bollards out of the ground...