The select few riders who have been allowed inside them have praised the service online, which for now costs just $4.20 a ride. For another, Tesla’s area of operations is notably smaller than Alphabet subsidiary Waymo’s, which began offering robotaxi service in the city through the Uber app in March. The human contributions likely make Tesla’s service much safer, she says—something for which the automaker should be praised. (Waymo now offers robotaxi service in five cities; Zoox has said it will start service in Las Vegas this year.) “If learning to deploy a self-driving car system was grades K through 12, Tesla is in first grade,” she says.