This is the Agile X Limo: a customizable mobile robot with modules and ROS that lets you try autonomous driving applications. It has 4 steering modes (omni-directional steering, tracked steering, & ackerman) and can be controlled via a smartphone.
The Limo is ready for object detection, obstacle avoidance, SLAM, path planning, and navigation. This robot is powered by an Nvidia Jetson Nano Developer Kit, EAI X2L 360° LiDAR, and ORBBEC Dabai stereo depth camera. It lasts up to 40 minutes on battery. It is based on Ubuntu.[where to find it]