Electric might not seem very practical for most of the population right now, but for many companies that employ fleets of vehicles, they make all the sense on the world. Many fleet vehicles don’t wander too far from home base, and often run the same route every day. Without the cost of gas or maintaince, companies would have much more money to use to improve their business and could also lower costs.
Freightliner, a big trucking company who already has natural gas and hybrid vehicles on the road, has turned to Tesla to provide battery packs for their upcoming line of electric vans.