You can now hail a self-driving Uber in Arizona

As of Tuesday, Uber rolled out its autonomous vehicle testing in the city of Tempe, reports TechCrunch. The arrival of Uber’s small fleet of self-driving Volvo XC90 SUVs in the Grand Canyon state seemed to have been hastened by a tiff that developed between Uber and the state of California over self-driving car permits and the running of a red light.