Share those experiences here... Late this evening, I got one of those "please rescue me" calls. In this case, it was a family member unexpectedly trapped at the airport. I had already finished for the day. The battery-pack was depleted, the display reset, and the plug-in timer set. Now, there was the need for a spontaneous drive. At a very comfortable 66°F degrees outside, I was looking forward to it and intrigued what that would bring in terms of efficiency. This was my first drive with the PHV as an ordinary hybrid, but with a Li-Ion battery-pack instead of NiMH. The 37.7 miles of driving was a delight. The result was 64 MPG. With an effort-free outcome like that, not using any plug-supplied electricity, I certainly am collecting some great real-world data to support this Prius with.