I've heard about self driving cars potentially helping traffic, but nothing specific from Tesla about how that would happen. Once the self driving features are widely adopted for Tesla's (1 to 2 years), it seems like a good idea to have a feature where Tesla's can "caravan" with each other on highways. That is, any group of two or more Tesla's could sync their systems together to go the same speed and travel within 1 car length or less of each other. The benefits of this would be two fold: 1) Decrease traffic congestion by decreasing distance between cars and effectively turning two or more cars into a unit that travels as one car. 2) Increase battery life and range significantly by decreasing wind resistance. Thoughts?