
"Speaking at a conference in Santa Barbara, CA, Shell CEO Peter Voser said that by 2050 he fully expects 40% of all vehicles in the world to be some kind of electric car. Shell has calculated that by 2050 there will be 2 billion cars in the world, up from today’s 1 billion.
Voser, contrary to what you might think (but clearly calculated to represent a marketably more caring Shell) was quoted in a Reuters article as remarking that over the next 40 years the world will also need to develop more low-carbon fuels, more efficient engines, and more hybrid vehicles to account for the remaining 1.2 billion vehicles that are not electric in 2050.
In order to ensure that Shell doesn’t become a dinosaur in the future economy, Voser said that they have been investing heavily–25% of their research budget–in alternative energy such as wind, solar and biofuels."
http://gas2.org/2010/03/05/even-shells-ceo-expects-electric-cars-to-dominate/