This year, we're seeing some of the early steps from the theoretical sketch room to a real world groundbreaking ceremony. In January, students participated in a design contest for the pods that would travel inside the Hyperloop's tube, and later this year, a piece of test track will be constructed by global construction firm Aecom. For many folks, though, the specifics behind the Hyperloop remain vague. So naturally, I've invited my friend and colleague Andy Hawkins to explain.

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