Tesla is expected to announce plans for a new robotaxi on Thursday. Networks of expensive self-driving cabs need lots of paying riders. Could a partnership with a ride-hailing company help? WSJ Heard on the Street columnist Dan Gallagher talks to host Zoe Thomas about Tesla’s anticipated plans and what investors are making of them. Plus, striking dockworkers are back on the job, but contract negotiations still have to work out a thorny issue: automation. Sign up for the WSJ's free Technology newsletter. Learn more about your ad choices. Visit megaphone.fm/adchoices