Is he trying to cannibalize current sales? I've got a Model X reserved but I'm almost ready to bail when I hear things like this are so just a couple years away.
Of course not. The range given in the title comes with the context(which is not explicitly given). The average speed to obtain that mileage is very low.
My understanding is the Tesla vehicles are a platform, and that even if you purchase a X now, you'd be able to upgrade the various components for autonomous driving and extended range.