A proposed train that will take passengers from Los Angeles to San Francisco in a half hour. The train is being funded by billionaire entrepreneur, Elon Musk, who is known for starting Tesla Motors, PayPal, and SpaceX. The only details released by Musk are that the train will not have a strict schedule, but rather it will leave as soon as passengers are on board, and also that the train will be weather immune. Some believe the train will use a pneumatic system, much like the tubes at a bank drive-through.