Amazon.com Inc. /zigman2/quotes/210331248/composite AMZN -2.23% has confirmed reports that it is buying self-driving ride-hailing vehicles designer Zoox, although terms of the deal were not disclosed. Media reports had said the deal valued at over $1 billion. Amazon said Zoox Chief Executive Aicha Evans and co-Founder and Chief Technology Officer Jesse Levinson will continue to lead the company as a standalone business. "Zoox is working to imagine, invent, and design a world-class autonomous ride-hailing experience," said Jeff Wilke, CEO of Amazon's Worldwide Consumer business. Amazon's stock gained 0.3% in morning trading, while shares of ride-hailing company Uber Technologies Inc. /zigman2/quotes/211348248/composite UBER -5.19% fell 1.8% and Lyft Inc. /zigman2/quotes/208999293/composite LYFT -3.95% slipped 0.4%. The S&P 500 /zigman2/quotes/210599714/realtime SPX -2.14% was down 0.8%.