On Tuesday, The Wall Street Journal said a “person familiar with the matter” confirmed that Google would be moving into the ride-sharing market currently dominated by Uber and, to a lesser extent, Lyft. The source said that since May, Google has been testing a feature that lets Google employees and employees of other nearby firms in the Bay Area organize carpools through Waze, a mapping and traffic app purchased by Google in 2013.

The report noted that this new service would be different from Uber and Lyft in that it would only try to connect people who are already going in the same direction, offering rates low enough to discourage drivers from operating like taxis. The service will only be available in San Francisco at the beginning.

According to the WSJ, Waze’s drivers in the closed pilot test only make 54 cents a mile, although Google doesn’t take a cut as Uber and Lyft do.

Waze and Google introduced a similar carpooling service in Israel last year, which proved popular, the WSJ wrote.

Earlier this week, David Drummond, Google’s senior vice president for corporate development, resigned from Uber’s board of directors, due to increasing conflicts of interest between the two companies. Google was an early investor in Uber, but those early ties have come loose, with Uber recently dropping Google Maps in favor of a home-brewed map system. (Uber bid on mapping system HERE last year but lost out to BMW, Daimler, and Audi.)

Uber and Google have also been working on driverless cars in tandem. While Google has been doing autonomous vehicle research for years, Uber partnered with Carnegie Mellon and recently announced that it will be introducing fully autonomous taxis in Pittsburgh this year. The autonomous taxis will have human operators in case of error, however.

The WSJ’s source said that Google is considering introducing self-driving cars into the Waze ride-sharing feature as well.

The source also said that Google would not employ the drivers of the carpooling service, nor would it vet its drivers, “instead relying on user reviews to weed out problem drivers.” Those two issues—employment status and vetting of the drivers—have proved problematic for Uber and will likely cause legal and regulatory problems for Waze and Google as well.

Correction: The mapping system Uber unsuccessfully bid for was called HERE not NEXT.