A small autonomous bus called an Arma is running a short route along Las Vegas’ Fremont Street, marking, according to transit operator Keolis, the first time a self-driving bus has moved passengers on an American public road. The route is short—just three blocks. And this is only a pilot test, which started on January 11th and will end January 20th. While the test lasts, the fully-electric bus can carry around a dozen passengers, moving at