Uber Technologies Inc. will offer driverless rides in Austin, Texas, and Atlanta using Waymo’s self-driving technology, according to people familiar with the matter. The partnership between Uber and Waymo, Alphabet Inc.’s autonomous vehicle unit, is set to begin in the coming weeks, the people said, asking not to be identified because the information isn’t public. The move marks a significant step for Uber as it seeks to expand its autonomous vehicle program, which has faced setbacks and delays.