Source: Tesla Motors Club
quote: Current Tesla's do not function properly in extreme cold. So the idea of an AWD electric vehicle on current technology for winter weather is a wash. Tons of Model S's in Norway, what!?
quote: Physics wise, that's not possible. Electric motors are efficient, but not 100% efficient. Powering all the wheels takes more energy than just two, can't get around that.
quote: You've also added, wait for it, more weight to the vehicle. More weight, less efficient.
quote: Explain please? How is using twice the number of motors and associated hardware a "tiny" expense?
quote: Elon has mentioned it will be more expensive in the "low single digits" as in, about $5k more than the Model S.
quote: The cost increase over a RWD model will be tiny (6-10%?)