yeah you can fold in a one piece fold in both single and double mode. in that mode though it *just* doesnt fit into my sedan boot. But i have seen that others with SUVs and wagons can do it no problems and i would think that with a bigger sedan (we have a honda civic) that it would go in...we are literally millimeters from fitting it in in that mode).

but i do fold it up whole like that for in our hallway (we live in a 2 bedroom terrace lol). it sits upright in folded mode so really easy to store away ITMS.