Elon Musk details Hyperloop: public transit via aluminum pods and electric motors

Elon Musk is into transportation, whether it's an electric car or a spaceship. Today, he detailed a plan to revolutionize a portion of public transit. It's called the Hyperloop, and it's meant to get folks from SF to LA (or any two cities less than 900 miles apart) in 30 minutes seated in aluminum pods that are hurtled to and fro at 800 miles an hour in a pair of steel tubes. To keep things safe, pods will be spaced five miles apart so that they can stop without running into each other, which me...