Well my problem with Hyperloop is similar to any heavy rail solution. It only goes from two fixed points and diverting to other points is very problematic. Some larger cities have multiple airports, would they have multiple hyperloops? Either solution requires some form of transport at each end, light rail, bus, or cars.

Hence I think Tesla combined with the driverless car technology being worked on by Google and others is overall a better solution. Lanes could be added or taken from existing multiple lane roads and given over self driving cars. A network of routes could be established, with and without battery swap stations along the way, to allow people to drive from nearly any point to another all the while doing so safely and with less impact on the environment. Individual vehicles just have too much flexibility to ignore and combining them with electric power and self driving ability would provide a better solution. It could even be extended into mass transit by having buses employing the tech. With a fully protected lane these vehicles could move at much higher speeds all the while being safer.

I like Musk's idea from the standpoint that it points out the fallacy of the HSR system that is proposed, the side effect its easy to point out the fallacies of his idea as well.