I'm a newbie here, and very interested in the Tesla roadster. Does anyone have one in a cold climate like Minnesota, Wisc, Michigan, North Dakota etc.? If you charge it all the way up, then let it sit out in below-zero (Fahrenheit) weather for several days, what effect will that have on range? I've heard that, under ideal conditions (i.e. warm, and you drive at a constant 50 MPH on flat ground), you can actually match the ideal range of 245 miles/charge, and sometimes do even better. How about under cold conditions as I described above? If you drive at 50 MPH on flat ground after letting the car cool down below zero, approx. what range can you expect? Thanks, all!