Has anybody here considered becoming a carpark mogul.

Having painlessly rented out the carpark I acquired with my AKL CBD apartment for a year and half, the idea occurred to me that they are an unidentified niche in property investment and with the rash of apartment buildings going up and most of them only providing carparks for a small percentage of the units it seemed to me quite possible of a huge shortage manifesting itself over the years.
The Herald ran an article over the weekend highlighting some craziness occurring in the current prices.