[MetroMPG]

Same here - I typically don't even drive with the radio/tunes on in the city.

As for cars doing most of the work - that's one of the nice things about a "full" hybrid vehicle. In city use, they do quite a bit of the fuel-saving work whether the driver is paying attention or not (mostly in terms of shutting off the engine when it's not needed, and capturing/reusing braking energy that would otherwise be lost).