Has anyone given any thought to oxygen concentrators in the cockpit? I don't know what oxygen systems weigh, a concentrator I looked at weighs 36lbs requires up to 350 watts 120ac, so 30 amp 12v plus the weight and inefficiency of a inverter. There are probably better and worse ones, this one was under $600 What about for the engine? instead of turbo charger just put concentrated oxygen into the intake? Probably to heavy and to much power draw but just asking.