California revokes Cruise's robo-taxi permit, calling them 'an unreasonable risk to public safety'

• California has revoked the license of Cruise, an autonomous robo-taxi service owned by General Motors. 

• The indefinite suspension comes after a different state regulator approved a massive expansion in San Francisco. 
• In recent months, videos have shown the cars causing chaos in various traffic scenarios. 

California regulators have revoked the license of a robotaxi service owned by General Motors after determining its driverless cars that recently began transporting passengers throughout San Francisco are a dangerous menace.