Key TakeawaysUber plans to add Waymo driverless vehicles in Austin and Atlanta next year.Uber said the number of vehicles in those two cities will "grow to hundreds over time."The ride-share provider already offers Waymo rides in Phoenix. Uber Technologies (UBER) shares jumped Friday after the ride-share provider said it would expand its partnership with Alphabet-owned (GOOGL) autonomous vehicle technology firm Waymo to add more driverless car rides. Uber said the service will be offered in Austin, Texas an ...