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[–] Sciency ago 

Electric cars are getting there, battery tech just needs to catch up. And before you mention coal plants and such, consider that nuclear, wind, solar and hydro-electric are the primary energy sources in that particular region.

Another issue is the economic viability for creating a pipline in a time where alternative fuels are actually starting to catch on. A new pipline might be safer and more efficient, but it is only going to be a moneymaker for as long as oil demand stays high. Using preexisting infrastructure means many millions would be saved in the event that a pipline is only needed for another decade. Obviously the economics change from region to region, but when mountains and hills are involved, costs quickly become absurd.