So driving from Portland to Seattle today, which without traffic would take 2:50 for 180 mile trip. Today though, it's Friday (the 13th), and it will take a little more than 4 hours. Wife is driving, while I work from the jump seat. We've spent about an hour in stop and go driving along I5. Mostly stopping for never more than 1o seconds, and never driving more than 15mph in speed, before the next stop and repeat process. Car computer says we're averaging 44 mph, getting 27mpg. Normally we could expect about 30mpg. It's 80 degrees outside, so we have some mild HVAC going. It would be interesting to know how much of an impact this might have on battery range. Particularly the stop and go part. I doubt the 60kWh battery would make this range, even though we're driving slower in general. It surely would tap the 85kWh battery. Anyone have experience in the Roadster or pseudo science to suggest how this might play out on the Model S?