Elon Musk, the entrepreneur behind Paypal, Tesla and SpaceX, has been hyping up his upcoming “future of transport” service, what he calls “Hyperloop”, a new way to travel long distances much faster than even airlines. He has called it a “cross between a Concorde, a railgun and an air hockey table” and says distances between east coast and west coast in U.S. could be covered in 30 minutes or less.

Now, in a tweet, he says the initial alpha design will be launched on Aug 12.

In a latter tweet, he says he will open-source the design and not patent it, in a bid to get as much feedback and adoption as possible:

He teased a bit about what Hyperloop will be at the D conference earlier this year: