Billionaire entrepreneur Elon Musk said the “Hyperloop” plan he unveiled Monday would cost $6 billion dollars and take 10 years to build — assuming it could be built at all. So, how do we do it? Do we even want to do it? The report outlines a number of challenges, including air pressure and an adequate power source. Offer up your edit on Elon Musk’s Hyperloop plan, and up- and down-vote other people’s edits. And if you don’t want the Hyperloop, let us know that too. Who knows, sometimes the best plan is the one that starts from scratch.