Last night I had the unfortunate experience of pulling into my garage with "1" estimated mile of charge left after about 45 mile roundtrip. To say I had anxiety trying to make it home is an understatement. Is there a list of tips anywhere on how to extend range? i.e. should you reduce brightness to the lowest setting on the display? Kill the A/C? Coast on downhill stretches? I'm a new S owner and am just wondering what I can do at times to get the most out of the battery when I'm not sure if I can reach my destination (or to extend the range a bit at times). Do you try to drive so the speedometer/energy usage meter rarely gets up into the orange? Thanks for any tips.