Thought about it, the cage is the same colour as the car, I know roadworthy, in case of collision head is protected (to some degree) with the assistance of the padding, you'd think with harnesses and fixed seats i would not get that far, and the car runs along very neatly around the head zone,
why, to make it look stealth, you would be surprised how subtle it looks, but right next to it, nah
and it has nice material with velco wrapped around it, instead of the zip tie look