Down at the bottom they made reference to standard vehicles having what were once premium features. It reminds me of when regular computers ate the premium computers from Sun and SGI.
That's a good point. Even sub-$30,000 Mazdas these days have surprisingly upscale interiors and features like adaptive cruise control and lane keep assist, and with rock solid reliability and great build quality too. Premium brands like BMW and Audi really have to work hard to differentiate themselves to justify their prices.
Tesla's motor and battery tech, Autopilot, and over-the-air updates really set them apart from other premium automakers and make them hard to catch even though they've got some work to do on reliability, build quality, and in some other areas. If Tesla can improve in their problem areas before other manufacturers can catch up to them on their strong points, I can definitely see that exponential growth continuing.