Electric cars will roam (some) highways

the PopMechanics Brain Trust : scientist
Who says you can't road-trip in a Tesla? In a few years, the 1350-mile stretch of Interstate 5 spanning Washington, Oregon, and California will be lined with fast-charging stations—each no more than 60 miles apart. In some areas you will find stations to the east and west too. Don't get any bright ideas, though. If you try to cross the country, you won't get much farther than Tucson.

Popular mechanics, (2012) "110 Predictions For the Next 110 Years", [online], Available: http://www.popularmechanics.com/technology/engineering/news/110-predictions-for-the-next-110-years