Yes, that sounds like a nice/simple/clever solution. Parking meters could also a good option for this sort of fit out.

The other obvious option is paying an extra fee at multi level car parks.

The thing I really want governments to mandate is for new apartment buildings with underground carparks to be built with provisions in place to move it way to get charging to a apartments reserved spot. With a bit of forward planning, a lot of money/effort will saved.