Thanks to Krousdb's fantastic mileage and a heads up from Xcel, I've started to use the Pulse and Glide technique. I've got no idea how well it is working because the tank already had a bunch of miles on it at low mpgs due to vacation style driving. The tank already had fast highway driving and a lot more in town driving on it than usual. Pulse and glide brought it up from 58 to 60 but regular driving might have done that anyway.

It sounds to me like the Prius goes into autostop when in neutral, is that correct? The only way I can get the ICE off in my HCH is to turn the key off to do a "manual autostop" or "reboot". It would be nice to mod it with a forced autostop button so a full reboot is not required. With a true autostop the car has PS the entire time and the gauges function all the time as does the radio. With a manual reboot you lose power steering for a few seconds, the dash resets (the car may not be keeping track of the miles drivin for a few seconds), and the radio cuts out on restart.