As an engineer, no. It's throwing good money to the birds. The problem here is not the tech. The problem is cost feasibility. Musk and his ilk keep lying about how much this thing costs. And they use ridiculous assumptions (or outright lies) to get there. There's no way to get the cost lower, because Hyperloop involves more technology and more construction than high speed rail or plain maglev. So, even if you figure out all the tech, the construction costs will still be exorbitant. And after all that? 10% of the passenger capacity of high speed rail! We know all this. So why should government invest in developing technology that won't have a business case to come to fruition? This would be about as sound an investment as spending on R&D for personal jetpacks.
Others are starting to call them out on their rosy estimates too:
https://bits.blogs.nytimes.com/2013...op-really-cost-6-billion-critics-say-no/?_r=0