This startup is about to build a $100 million Hyperloop test track -- and it's paying its employees nothing

Elon Musk's Hyperloop system is estimated as costing millions of dollars per square mile to build. But the startup Hyperloop Transportation Technologies (HTT), which is planning to soon break ground on a Hyperloop test track, has found a pretty effective way of keeping costs down: The company doesn't pay any of its employees, including its CEO Dirk Ahlborn.  Instead, all employees work for at least 10 hours a week during their off-hours from their full-time jobs in exchange for a stake in the c...