Everyone hates California's self-driving car reports

Every year, companies that operate self-driving cars in California are required to submit data to the state's Department of Motor Vehicles listing the number of miles driven and the frequency at which human safety drivers were forced to take control of their autonomous vehicles (also known as a "disengagement"). And every year, those same companies raise a huge stink about it. Waymo, which drove 1.45 million miles in California in 2019 and logged a disengagement rate of 0.076 per 1,000 self-driven miles, says the metric "does not provide relevant insights" into its technology. Cruise, which drove 831,040 miles last year and reported a disengagement rate of 0.082, says the "idea that disengagements give a meaningful signal about whether an [autonomous vehicle] is ready for commercial deployment is a myth." Aurora, which only drove 13,429 miles and recorded a disengagement rate of 10.6 per 1,000 miles, calls them "misguided."