Investing.com -- Uber Technologies (NYSE: UBER) shares skidded 4% on Friday, with losses accelerating in the final hour of trading following a revealing Financial Times report that Alphabet's Waymo is eyeing the exit ramp on their alliance. The Financial Times notes that both companies are actively lobbying for robotaxi legislation engineered to benefit their own business models at the expense of the other. Uber has heavily leaned on a network of self-driving technology providers to expand its robotaxi footprint. If Waymo officially pulls the plug, it forces Uber to rethink its autonomous roadmap while setting the stage for a fierce, head-to-head robotaxi turf war. Related articlesUber under pressure: Waymo partnership on the brinkTrump says U.S. to launch trade probe into EU fines of tech firmsQualcomm stock dips despite midday spike on price hike report