I realize this might be a wildly unpopular statement here, but I can't imagine having the audacity to expect to be able to charge for free. Most cities charge you just to park next to a losy concrete curb, for Pete's sake. Electricity costs money folks. I started a thread here some time ago regarding the presence of free charging, and the general consensus was that eventually charge points will be pay to play. Outlets won't continue to put in chargers just because it makes them feel warm and fuzzy.
It's relevant to this topic, because the charging is FREE. People will gladly take free stuff, whether they need it or not. When people have to PAY, it's funny how they realize what they can do without. As long as the charge points are free, anybody with a charge port on a car is going to plug in. If it costs money (like it rightly should), someone will think twice about whether they really need the juice to get home. I guarantee this problem will solve itself when free charging points disappear. At that point the plug-in Prius, with its 8 mile EV range, will seem even more pointless than it already does.