EcoWatch: If nothing else, Tesla Motors CEO Elon Musk knows how to make headlines. One of the most frequently cited drawbacks to electric plug-in vehicles (EV) such as the Tesla is that they dont go very far before you have to stop and charge them, at times greatly exceeding what it takes to fill a gas tank. Thats been dubbed range anxiety. Some EVs only go about 100 miles, while Tesla models average between 200 and 270 mpg. And while the number of public charging stations, including the faster Superchargers,...