Volvo's ROAR (RObot based Autonomous Refuse handling) project has moved into prototype testing, the company announced earlier this week. The ROAR system is designed to autonomously empty trash cans from the back of a garbage truck, saving the driver from having to manually load bins into the hopper. The initial concept involved just the robot, which relied on maps of the neighborhood and likely bin locations (as well as GPS, LiDAR and accelerometers) to help it navigate. The new iteration, on the other hand, also employs an aerial drone that lifts off from the garbage truck's roof to act as a pair of "eyes in the sky" for the ROAR, telling it where the trash cans actually are, not just where they're supposed to be.