I've got a carry cot with my push chair instead of a car seat as I went for comfort for long walking trips. Does anyone know if it's still safe and legal to use it in the car instead of a car seat? I know they were used a few years ago but the safety regulations have changed lots. I have enquired to get a harness fitted but not sure if that's enough. My car is a bit small to put a car seat, carry cot and push chair in!