Oh yeah, just wait until your charging station installs ads. Then you're stuck watching an ad while your vehicle charges. That, of course, takes longer than inserting fuel into a tank. So more advertisements and more money for the charger!
Beside, if you're talking about public charging stations, it's already been done (can't remember the name at the moment). The difference between those chargers and a gas station is, you charge for free (Level 2, though). It's odd, too, because the ones I've seen are at grocery stores. So, plug in, go into the store...when am I supposed to see the ads?