A cow ferris wheel

I visited Harper Adams University College today - a place dedicated to agriculture. They showed me around and my favourite item was this. It's a milking machine. Cows enter centre back - each gets their own little capsule. Then it slowly turns until there's a whole circle of cows gradually being rotated around. They are milked by machine and when they have made a full circle, the milking is finished, the sucker things drop off their udders and they exit centre back.
Apparently most of the cows doze off during their little circuit.