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On secondary roads, no autopilot if you want to go more than 5 mph over the speed limit. While that may sound prudent, the normal flow of traffic is often faster than this. Using autopilot should not require you to hold up traffic. Thus, autopilot has become nearly useless on secondary roads...

My car (2016 90D, Model S) has a slightly degraded battery (72-73 available kwh) and it still displays a 275 mile range when fully charged. My actual range, driving at 340 wh/mi, is about 200 to 220 miles. The cars display of range takes no account of battery degradation. This was a dealer demo...

Battery capacity degradation over years is of considerable interest to me as a prospective buyer. All of the discussion and evaluation of this issue relies on the displayed range from the cars instrumentation. It would very easy for this predicted range to be much less than actual range. Is...