First road trip

Hi all, we took my little (5 mo) on a road trip 4 hours away to see our family. When we got there, he had a complete meltdown for 2 hours screaming inconsolably until I finally was able to nurse him to sleep. He did great on the car ride, I’m wondering if this was just a result of a long day or if this is just normal for this age when around new environments and new people ?