Over a decade ago, Elon Musk promised a fifth mode of transportation capable of crossing continents in minutes, but today his revolutionary Hyperloop has been dismantled, defunded, and reduced to ...

The Boring Company has earned numerous local projects over the years in cities like Las Vegas and Los Angeles. But CEO Elon Musk‘s grand vision of a city-linking hyperloop has still yet to materialize ...

Add Yahoo as a preferred source to see more of our stories on Google. Three major U.S. cities could soon have a new, privately funded underground tunnel for commuters. The three cities beat out 487 ...