Let me preface this by saying, I know full well the Prius is not a sports car, not very quick and nimble. The Prius has different goals ,nice size, fuel economy, and high technology. I do love it for what it is, 53 mpg average so far on my second tank, cool. Still I thought it would be interesting to test my new 2008 Std. Pkg 4 using my GTECH RR performance meter, I have used this for tuning my Porsche and found it to be consistant and accurate. So below are two graphs made from three seperate runs from 0mph to just above 60mph. The first graph is time to speed, and the second graph show G's. All three runs are overlayed. It about what I expected. Oh... and my average of the last 40 miles dipped from 53mpg to 49.6mpg after making the runs.