Tesla Inc. has expanded its testing of a ride-share app to employees in Austin, as the company pushes toward a June launch of an autonomous version of the service.

Tesla will launch its first robotaxi service in Austin, Texas, in June, CEO Elon Musk told investors on the company’s April 22 earnings call. Tesla vehicles are being tested on the streets of Austin now, Musk said, “to make sure that we deliver a safe product.”