There are a number of things about the article that don't work for me, but there's a core notion that I think they've got spot on (however the precise manifestation works out in practice). For whatever reason, Americans like big cars. Everything else being equal, bigger seems to be better. Most of the time, the problem is that as the car gets bigger, the fuel efficiency gets worse, and you have to make a conscious tradeoff for frequency and size of gas bill, for the car you want to drive.
Model X looks to me like the perfect no-compromises big car choice. AWD, lots of spacious seating, storage, and that other big car stuff. Then add in sports car like performance (at least the Performance version), good handling (low slung battery for low weight distribution), and you have a car that seems miraculous. I'm guessing that if Model S is at 89 MPGe, that Model X will come in around 80 MPGe. Regardless of whether you like that metric or not, it's one way of indicating that you can have a car that does everything you want AND be one of the half dozen or dozen most efficient vehicles on the road.
That's a ridiculous combination, and if all of that does prove out when the car ships, then I'm predicting now that within a year of introduction, Tesla will be selling / delivering more Model X's to the US than Model S.
