Ha, I've yet to go over 100 miles without charging (again no long trips yet)
I don't accelerate really fast, I haven't even put it in insane mode yet. Winter has been brutal here. I'm hoping it's the weather plus the city driving factor. I'll have better gauge on things once it starts to warm up here.
A couple things are for sure: it's gotten better with the last few software updates, but it's still high. Energy use is really high when I begin driving after a long (hour plus) stop no matter how 'un-spirited' I drive, even if I hop right on the highway. This tends to lead credence to the weather being a big factor.