Comment by kube-system

You are entirely right, because 98%+ trips in a car are commutes or errands that average 6 miles in distance.

But, that is not the topic of conversation above -- we were talking about trips 600+ miles in distance. These are almost exclusively not commutes.

Averages don't necessarily describe your whole data set. Just like how the average person has around 1 testicle, this data is also multimodal :) ... People commute alone, but they go on vacation with friends/family.