Rotisserie - never seen one like this before

i watched these kind of stands in eastwood several years back and they just disappeared. i don't know if eastwood was having problems getting these from the manufacture or if there were safety issues. one thing i always wondered when i saw these was if the stress on the body would cause any of the glass to break. i also suspect that you could not safely roll a car on its side like this with the engine and trans still in it as i doubt if the rubber motor mounts would stand this kind of stress. i think i would stick to the more conventional "twirlling" type of stand.