I don’t give a shit about Elon Musk, so I’d largely ignored Hyperloop, but now that I’ve taken even a cursory gander—
Y’all are shitting me, right?
Just to punch one hole in this mess:
The train will take folks from LA to San Francisco (~350 miles) in 30 minutes. It can reach these hella crazy high-speeds because it’s a bullet train traveling through a vacuum maintained in an unbroken, direct-shot tube. Based on their own experience with their ~1 mile long test track, we can expect that it would take 200 to 300 hours to evacuate the air from this LA-SF bullet train tube. i.e., it could make the run between those two cities in 30 minutes, but only do it once every 10 days? And how much energy does it take to create that vacuum? And how much money to maintain a pressure vessel orders of magnitude larger than any other ever created?
(Also, FYI, in their test track they expected to hit maybe 80—not 800—miles per hour, but actually maxed out at 60mph. My dying Prius—henceforth, the HyperCar!™—exceeds that every single day on Michigan’s crumbling roads.)
 DISCLOSURE: I’m representing the time taken to pump down a chamber as being linear. I don’t actually know that that is the case; I could call some industry folks I know, but the timezones are against me this time of day, and it’s hardly worth bothering.