Target Tracking Live Objects converted into simple meshes in Unity

Im trying to take a 360 camera (lidar or other) to detect an object, for example a car. Then have that object converted in to a simple mesh, even a simple box, then have that box match the movement of the live object. For example imagine taking google maps...zoomed in...then see all the cars and objects around you rendered in a simple 3d scene. The tracking, detection seems to be the simpler part, i dont know how to take that data and convert it into a Unity application.

Thank you in advance for any insight.