It might not work for you, it makes perfect sense for me and my scenario. What's so wrong to plug it in for short time to get a cheap or free commute home anyway? Doesn't sound gimmicky to me.
You're really going to drive to a charge station, hop out and plug the car in, wait for it to charge and then drive home to save $1? I can't find the actual charge time required but given the fairly common knowledge that charge rate drops off a cliff once you are more than ~80%, likely you are looking at a something like 5 minutes for 28 km of range. It may work for a couple people, but that seems like a huge waste of time to me, I'd rather be a buck poorer and home with the family.