The cost of the hyperloop is equivalent to the sum of every single VC investment (including life sciences, cleantech etc. not just software) made in the last quarter.
There's nowhere near enough money in the VC world to justify the kind of investment it would require. As it happens the biggest VC rounds in recent history have gone to transportation companies like Fisker and Better Place, but even those are in the hundreds of millions rather than the billions something like Hyperloop would require.