[ericd]

When it's unusually cold, I expect some conservatism, which translates into charging more than I think I probably need to. It's a universal that a piece of technology will operate worse in extreme conditions than in optimal ones (I'd say 15 degree weather counts). The Model S' specificity probably hinders it in this case, since people would naturally build in some buffer in the cases where they have to read an imprecise readout. Since the range readout is so precise, the expanding range is definitely a kink that needs to be worked out.

Edit: My gasoline car will sometimes show my tank as almost empty when I first turn it on, but over the next 10 minutes, will slowly but magically reveal much more gas in the tank. I don't think it's unacceptable to have any kinks whatsoever in a car... they're pretty common actually. It's just that we haven't yet learned to deal with these ones like we have with the gasoline ones.