Bob,
Thats a lot of stats
I will concede that should I be the kind of driver who spent most of my time driving only in town then actually a Hybrid may make some sense - even if only for the convenience of self-shifting to deal with stop-start.
Not sure about the Jetta = Compact Car vs Prius full size argument. Looking at the parked side by side and the interior space they seem very similar. And of course with a Jetta you get the option of an estate / wagon. The Prius is better than a lot of other Hybrids in losing little interior space as it was designed to take the battery packs. A conventional car tends not to be - so you get compromises like the battery pack in the Focus Electric taking up the whole boot - I know a hybrid battery would be smaller, but I'm tapping general ideas.
A couple of questions if I may. Do you know how the Atkinson engine compares to the Diesel in terms of efficiency ? Nobody as far as I know is following Toyota down that lonely path. And secondly is the 3rd Gen Prius an Atkinson unit ?