There's nothing stopping someone from making a self driving car with two compute systems and multiple types of sensors with overlapping FoVs. In fact, you can u

There's nothing stopping someone from making a self driving car with two compute systems and multiple types of sensors with overlapping FoVs. In fact, you can usually see on most self driving cars - a minimum of two roof mounted LIDAR (which share FoV in front and back) and various cameras.