Battery life like the iPhone 6 Plus: Everybody likes the idea of an electric car, but nobody wants to run out of juice in the middle of the countryside. Tesla’s Model S, with the largest battery available, gets less than 300 miles per charge; that’s simply not enough to relieve our anxiety about ending up stranded on the side of the road. We want an electric car with a battery that lasts at least as long as an iPhone 6 Plus, so we can spend a solid day driving without any worries.