Last Saturday Uber shut down testing autonomous car technology development in Arizona following an incident on the road. They have been testing self-driving cars in San Francisco, Pittsburgh and Arizona. Local news outlet with ABC reported that 'A car failed to yield to the autonomous SUV and hit it, authorities said. The self-driving SUV rolled onto its side as a result crash.' Uber also shut down development in Pittsburgh following the incident. Today the company noted that they would return testing in San Francisco with an updated vehicle, along with backup human drivers for difficult moments on the road.