From a total outsider, some guesses in order of least to most likely (imvho).<p>1) Better batteries (I don't know what I'm talking about, but probably not).<p>2) Better power management with electronics (the win here seems too marginal to warrant the level of excitement Elon has shown).<p>3) Partnership with some ubiquitous bricks and mortar business that will now offer charging stations.<p>4) Partnership with some ubiquitous bricks and mortar business that will now offer automated battery exchange stations.<p>Number 4 would be very cool indeed.