Re: CleanMPG Reviews the 2011 Chevrolet VOLT Review Blog Interesting. That seems kind of early for MG1 to clutch in, which is the only thing I could think of that would give that feeling. I can't say I've noticed it but I'll start paying attention. BTW, I remembered an interesting thread on gm-volt. Several people were theorizing about what feels like a "downshift" when you accelerate hard at highway speeds. It turns out that you're feeling the delay as MG1 slows down, stops, and declutches while the ring gear gets clutched to the case, shortening the effective ratio for better acceleration. A reader who has access to the diagnostic software provided the data. Anyway, this is the data I found interesting in light of your steady state highway testing: 94km/h is 58mph. 33.3A @ 360V = 11.99 kW, which 10.4 kWh (usable pack size IIRC) of energy could sustain for 52 minutes, permitting 81.5km, or 50.5 miles, which has a familiar ring to it. The poster did say the current data was noisy though. It may just happened to have worked out in this case.