In my neck of the woods, SW VA, plug in vehicles are very rare. Gas is cheap, $2.43, and so is electricity, $.11 KWH. Tesla has a supercharger (5) close but I've never seen even 1 car there.
Though I mostly charge at home, I have become bolder just plugging in to a 120v outlet when I can. More are available than I thought. Most all parking lot lights are equipped with 120v outlets and though most have covers over them, some don't. Many hotels have outdoor plugs. Bottom line, though is that there is very little dedicated infrastructure for BEV or PIHEV's in this area. At $.99 and 7 hrs for a full charge, I don't feel bad just plugging in when I can but that's not often.
If we were serious about renewable energy, there would be one standard and businesses would make it a part of their business to provide charging. Tesla seems the only company serious about renewable energy. I applaud them but can't afford them in $'s and range.