Yeah, that's correct John although the combined gross weight in the eu is 44 tons now, I drove flour tankers for a couple of years and managed to load 29 tons of flour into 5 hatches, unbaffled of course which took me 20kgs under 44 tons, lucky I only weigh 80kgs..... hovis are running with fibreglass tanks now and get even more payload on.... as for the water you would need an artic to carry anywhere near that amount of water about 30000 ltrs  and I cant see them going up narrow uneven roads to a finca.