Actually, you will find Tesla Superchargers and other brands in parking lots all over the place around here. Just had a set of 8 250kW Superchargers installed at the local Whole Foods Market.I was referring to your hypothetical "parking lot", keep up. I have no doubt that some have retrofitted existing stuff (where possible) is one thing, a parking lot is another.
I'm not sure where else makes as much sense. Here I am up in Petaluma at a nice newer shopping center.