high speed trains

Tesla CEO Elon Musk is a man of many and advanced interests, and his latest notion--the Hyperloop rapid transit system revealed as a concept yesterday--fits into his vision of a very different future. In a nutshell, the Hyperloop is a system in which people board pods inside an elevated metal tube on pillars that carry them from San Francisco to Los Angeles in about half an hour, at speeds up to 800 miles per hour. It was Musk's reaction to the proposed California High-Speed Rail project that is to connect the same two cities, and ultimately run from San Diego to Sacramento, that got him...