The news could affect shares of car dealers or online platforms such as Cars.com. Amazon Auto represents competition for listings and used-car inventory. Carvana stock dropped 6.3% in early trading at $322.52. CarGurus stock slipped 1.6% at $31.92. Cars.com stock was off 0.1% at $12.05.

Amazon began selling new cars late last year through an arrangement with Korean automaker Hyundai Motor, but consumers still must use a Hyundai dealer to complete the sale. Amazon is also recruiting car dealers to list their used vehicles, including those designated as certified preowned, on Amazon Autos.

Hertz Global Holdings said on Wednesday its car sales unit was partnering with Amazon.com’s automotive retail platform, Amazon Autos, to sell