This is just classic. MS (like others) is essentially refusing to even model TSLA using Tesla's own projections, and instead predicts it will grow at a small fraction (e.g., 25% or less) of the Company's own relatively near-term projections (2 years).
So even if Tesla completely muffs it and sells "only" 250,000 cars in 2018, it will be on track to double the projections. If Tesla hits the targets, it will quadruple those projections (or more). And investors don't have to sit around until 2020 waiting for this to play out. This is a tough week if you are long on a short-term trade, but for a long-term (or medium-term) investment, wow.
I mean, we are talking about mass producing a car, not sending a rocket to Mars or something crazy like that! : )