Hyperloop

Musk began developing another transportation project in 2012, something he calls the Hyperloop.

Whatever – the result is the same: they usually jump in front of the nearest hyperloop shuttle.

There is a small handful of groups working in earnest on making Elon Musk's dream of a hyperloop a reality, but none are so high profile as Hyperloop Technologies.

Then in 2013 we all find out who Elon Musk is, the Tesla, Space X^([sic]) and hyperloop guy.

Will the fate of the hyperloop concept be different from the maglev and be introduced quickly and successfully on the market?

Musk also features in the other piece of bad news for the tech enthusiasts - the effective collapse of the hyperloop, as the technical limitations of the idea have become all too apparent. [...] Firstly, in February, Virgin announced it was abandoning plans to create a passenger-carrying hyperloop system and made the 100 staff working on the project redundant. Then, early in November, it was revealed that Musk's test tube for hyperloop has been dismantled with no explanation, with the site now being used as a car park.

If Hal finds a value of x such that fun(x), Hal sends a signal to Dave (perhaps a light-beam). Dave carries a receiving device with him, which stores a variable, xFound, initialised to a default value of 0; this receiver sets xFound to 1 on (and only on) receipt of a signal from Hal. Once Dave reaches point r, Hal's entire infinite history lies in Dave's past, and any signal that Hal might have sent to Dave will have arrived. So from Dave's perspective, by point r, Hal has completed a hyperloop.

At this point, the hyperloop breaks in. A holographic virtual image is presented to an optical observer. Where is the observer of the image formed from Gij? Presumably, it is the physicist. But the physicist is himself an image projected from the same source. We still have a self-viewing system, and a no-exit loop.