Hyperloop

The Hyperloop is a hypothetical mode of high-speed transportation proposed by the entrepreneur and SpaceX founder Elon Musk.Billionaire investor Elon Musk has unveiled plans for a "Hyperloop" transport system he hopes will one day shuttle passengers and cars between Los Angeles and San Francisco travelling faster than the speed of sound.

In his blog post Musk wrote:

The underlying motive for a statewide mass transit system is a good one. It would be great to have an alternative to flying or driving, but obviously only if it is actually better than flying or driving. The train in question would be both slower, more expensive to operate (if unsubsidized) and less safe by two orders of magnitude than flying, so why would anyone use it?
If we are to make a massive investment in a new transportation system, then the return should by rights be equally massive. Compared to the alternatives, it should ideally be:
Safer
Faster
Lower cost
More convenient
Immune to weather
Sustainably self-powering
Resistant to Earthquakes
Not disruptive to those along the route

The Hyperloop could meet these criteria, Musk said.
Musk talked about his ambitions for the Hyperloop during a Google-sponsored event with fellow entrepreneur and space explorer Richard Branson last week. "You want the future to be better than the past – or at least I do, quite a bit."