If tesla can get 500,000 cars out there, ICE cars are toast. Enough of legacy cars and makers.
If Tesla can pump out 500K globally, that's respectable, but hardly a death knell to the 80 million unit industry.
http://www.latimes.com/business/autos/la-fi-hy-auto-sales-20...
https://www.statista.com/statistics/200002/international-car...
electric will always be a victim of its own success unless it can actually become competitive with ice on cost and energy density.
remember that the baseline cost for an ice car is about $1000 (used) and $5000 (new). there is a world outside of california (shock) and it has billions of potential customers.
ice isnt going anywhere.