Get a small foam cooler. Set up the egg box so its ready for the incubator. Instruct him not to touch the eggs.... but to make sure his enclosure is at the proper temperatures for the eggs, if they come ( Just in case he hasnt a clue as to how to care for them)
Get a heat pack or two. ( just something to keep the foam cooler warm for the drive, im assuming this is about a 30 minute drive) And youll be fine. Try not to let them get too jostled and you should be golden.
Before you leave. tell him to separate those animals.