Late Sunday night, Elon Musk revealed that the LA Hyperloop Tunnel will open on December 10. In another tweet, Musk claims the system will have a top speed of 155mph. There will be an opening event at night, and if everything goes to plan, there will be "free rides for the public next day." Musk's Boring Company is just one of many companies chasing the hyperloop transportation dream, and Musk hopes that trips from downtown LA to the international airport could take just 10 minutes. A hyperloop is a shuttle pod that travels on magnetic rails, somewhat like a train, but which runs in a tube with little or no air. In theory, hyperloops could allow travel faster than the speed of sound.