I've noticed that the range calculator is back, now imbedded in the specs page on Tesla website. The odd thing is that as one changes outside temp with "heat on" all versions increase range as outside temp increases until it reaches 70ºF, when the "D" version ranges continue to rise but 85 drops slightly. Same thing occurs at 90ºF outside temp. At 110ºF outside temp all versions' ranges decrease. I've not yet heard back from Tesla via "contact" form, so I will ask here. Odd quirk of the single motor version, or website design error?