I get your point, however would strongly disagree.  I think within the next five years EV's will be a significant consideration and when ICE makers start focusing more on EV's than ICE's it will grow even faster.  

Since we are just guessing, my pick is that in 10 years a full 20% of vehicles will be EV's and in 15 years it will be 50%.   20 years it will be over 75%.