What was the weather on the drive to Arizona? Was it raining or snowing?

The traction control in my TCH can do some strange things when there is even a little standing water or snow on the pavement. In both cases the traction control seems to take a priority over regenerative braking and even 'coasting' battery recharge activities. I don't have enough data to post the results yet, but I do know that it decreases the battery charge rate, and therefore affects FE.

I also suspect that water on the road impacts LRR tires more than others. I can't prove it, but I do know that slightly more power is needed to maintain a constant cruise speed than when maintaining that speed on dry pavement over the same route. Over my 10 mile 'control' route (a portion of my morning commute, always taken at 65MPH and only very occasional traffic interference) I notice that power demand during rain (Seattle, go figure) is higher than during dry days. On dry days I can stabilize my MPG indicator at 50 and maintain speed, and sometimes in heavier rain, I cannot maintain speed over this same course with 45 on the meter. This is with the temperature hanging at the typical Pacific Coastal 48-50 degrees, as usual.

It is the ignorant among us that will eventually destroy us all.