"84 seconds for over 300 data points" That's just one sample for each data point correct? That sure is a lot of data to grab! Interesting but you know I would record a few at a time to increase update rate of each data sample. But then we would lose the time stamp to correlate with between each recording. I was thinking that using a dyno on the front wheels would create a similar resistance for doing multiple recordings, of course one would need to exactly do the same take-off and speed then coast on each recording, but it may work. Also what ever happened to the "dyno-charging" idea? That would also be way cool to be able to drive the dyno drum and let the prius roll along getting a free HV charge. Water power anyone?