It's hard to tell from the images how much overlap the cameras have. Taking redundancy aside, since the cameras seem to have varying field of views, stitching together for a true 360 view isn't trivial.
In order to get good coverage, you either need a good 360 degree view stitched to one "large" image. Or you need non-insignificant overlap. (imagine you see something at the camera's edge, if you don't have enough overlap with the next camera, how will you know if it's a car that you need to worry about, or a shadow that you don't?)