Your Amazon shopping cart could soon include a late-model used car from Hertz. The rental-car company has started selling its used vehicles directly to consumers through the online giant.Hertz shares soared as much as 17% on Wednesday after the company said it would sell its used cars on Amazon’s automotive marketplace.

The partnership gives Hertz, known for its car rentals, more visibility and a potential profit boost for its auto sales business.

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.