As kids, we dreamed of a future with all kids of sci-fi perks: Supersonic travel! Magic technology! Such is the optimism inherent to invention. But as we grow older (and more cynical), the subject of futurism starts to seem naïve, almost kitschy.
That's why we need earnest visionaries like inventor and Tesla Motors CEO Elon Musk to remind us that the future isn't quite as unattainable as we might think. When Musk unveiled his proposed design for the Hyperloop last August, it was celebrated almost as much for the undeniable nostalgia it provoked as it was for its implications for future high-speed travel.