We got Moose a "pet taxi" for his ride to Arizona. Moose has never been the world's biggest fan of small confined spaces with cage doors. However, he is the world's biggest fan of Temptations Tuna Treats. So, in an attempt to get him comfortable with his temporary digs, I placed a trail of tuna treats leading up to, and then all the way to the back of his carrier. We'll see how this goes.
Update: Moose has now eaten all of the treats leading up to his carrier. After that he stuck his head in and sniffed around a bit, but he didn't touch the treats inside. Maybe he will after we have gone to bed and he figures that there isn't much threat of getting locked inside.
Update #2: We woke up the next morning and all the the treats that were placed inside the cat taxi are now gone. Moose must have gotten the courage to venture into the carrier while we were sleeping.