"The highest court in Massachusetts has ruled that Tesla should be able to sell its electric cars directly to consumers like you and me. That's a big win for billionaire entrepreneur Elon Musk, who's been waging a multi-state battle for the right to sell the vehicles — and make their technology more commonplace. But the ruling also highlights a growing divide between states, one that will tell us a lot more about the value of electric vehicle technology in the years to come and its potential to change how we travel, how we use energy and even how we design our future cities."