https://www.reuters.com/article/us-autonomous-cruise-san-francisco/driverless-race-steps-up-with-cruise-allowed-to-drive-empty-in-san-francisco-idUSKBN2702K0 >The race for driverless autonomous vehicles is heating up and on Thursday Cruise became the first to receive a permit to test cars without anyone in them on the streets of San Francisco from California's Department of Motor Vehicles.