Eventually you will first be corralled into one of these, then backed into the plane...
my wife and i flew recently across country,
and it did remind me of this, growing up on a dairy farm,
a huge air cattle car.
chock full of moo cows, calves, bulls and steers,
all tied in place.
I definitely think this is where we are heading. It will be a mooving experience.
those have legally mandated more space per animal.