It only takes about 10 seconds to plug it in - you don't have to stand there and wait for the tank to fill up, it just charges while you shop or work or whatever.
If they're adding a tax to the charge, it's not much. It only costs me about $3.00 to fill up the "tank".
I think the next ad-intrusion mode will be ads that automatically play inside the driverless car while it's taking you to your destination. (Not looking forward to that one)