Mike Barnard :

A tipping point has been reached in the last two years for electric cars. Almost half of all fully or partially electric vehicles sold in the past decade were sold in 2014. In addition to the standard-bearing Tesla, every car manufacturer in the world has fully or partially electric cars in their lineups. The most exciting cars in the world are now electric.
 But what does this mean for global gasoline consumption over the coming decades? To explore this idea, I created two scenarios, a moderate speed penetration of EVs and a more aggressive penetration.