Tesla CEO Elon Musk is making good on his promise to "end range anxiety" for Model S owners today with an over-the-air software update that packs in two new features: Smart trip planning for plotting routes along its charger network, and alerts for when you're getting out of charger range. The trip planning feature is even intelligent enough to know if a charging station is full or out of service. While many were expecting Tesla to give the Model S better mileage, Musk explains that these new features are more about squashing the perception of range anxiety. Many Tesla owners told him they don't feel any range anxiety at all -- these updates are more meant for potential Tesla shoppers who might by worried about being stuck in the middle of nowhere. Sure, it's not as exciting as magically getting more range, but getting people to move past their range anxiety will be important to all electric car companies over the next few years.