Just a thought, drill air holes (lots of them to also allow excess body heat to escape) in plastic totes, put hay or shavings in the bottom, and the animals inside, to take them with you. You can worry about food and water when you get to your destination. I've used plastic cups while travelling to stop and water my animals, and reassure them we will get there soon. It keeps them more calm also, being in a dark space during transport.
This is a good idea.
In a lot of times when illegals were transported and when there were deaths, it was usually due to bad ventilation.
Animals could be the same way.