Luxury carmaker Mercedes-Benz will partner with self-driving sensor maker Luminar Technologies to enable fully automated driving on highways for its next-generation vehicles. While no timeframe as to when the technology will be implemented has been decided, Luminar CEO Austin Russell told Reuters, Vehicle autonomy “is really going mainstream with Mercedes.”

He said the two would develop “true” autonomy capabilities, including improved safety capabilities such as automatic braking.

“If you want to be able to get to truly autonomous capabilities in a consumer vehicle, and you have to industrialize hardware, software, all of these systems that come into play. That by the way, is completely different than the work that the robo-taxi companies have been working on,” Russell said.

He said it is a challenge to mass produce lidars and make sure they are robust enough to meet stringent requirements from automakers. Lidars use laser light pulses to measure the distance between the sensor and the target object, and are widely seen as essential to achieving full autonomous driving.

“It is a completely different kind of business of going from a science and technology business to automotive corporation,” Russell said.

Tech firms such as Alphabet’s Waymo and Cruise also are developing self-driving taxis or trucks for commercial use such as ride-hailing and delivery services and automakers such as Tesla, General Motors and Volvo are keen on introducing autonomous vehicles but regulatory and technological challenges remain.

General Motors is working with its majority-owned Cruise self-driving unit to introduce a personal autonomous vehicle by as early as mid-decade, Chief Executive Mary Barra said this month. And Volvo and Luminar said earlier this month that they will put a hands-free driving system in an upcoming electric sport utility vehicle.