It's part of my eco-tourism/travel argument, Amos: that is to say, if you'll pardon my gobbledygook, if the planes, owned by various competing private-airlines, were indeed, say, only half-filled with passengers (as with the one I boarded), then, all nationalised, much fuel and carbon-pollution could be saved getting the same number of folks from A to B/ S.F. to N.Y., in this case.