Volvo Cars will start producing vehicles in 2020 that are equipped with lidar and a perception stack — technology developed by Silicon Valley startup Luminar that the automaker will use to deploy an automated driving system for highways. For now, the lidar will be part of a hardware package that consumers can add as an option to their Volvo vehicle, starting with the second-generation XC90. Volvo will combine Luminar’s lidar with cameras, radar, software and back-up systems for functions such as steering, braking and battery power to enable its highway pilot feature.