Interesting post from Robert Graham on how far you can really drive your Tesla and when you can expect to get stranded (and for how long).
The only thing that seems to be missing is the impact of climate control on your range. Air conditioning draws amps from the battery, and heat draws even more. You will drive furthest on a beautiful spring or autumn day than in the hot summer or freezing winter.
Shorter post: green philosophy gets pwned by engineering constraints.