> The irony of the cigarette lighter outlet in a modern car is that it's not likely to be used for its original purpose, but it won't disappear from cars because it's a convenient way to charge a small electronic device.

I subscribe to a car-sharing service that uses exclusively Volvos and they all have USB ports. And the cigarette lighters are marked "12V" instead of "cigarette lighter". I can see the 12V ports disappearing in favor of USB in a couple years.