Is the Yukon Hybrid worth the money?

Meaghanne questioned:

My husband and I are looking to upgrade our Nissan Xterra. We do work as a carpool for our job (to save cash we volunteered) so we constantly have a very forceful and packed vehicle. We were looking into being paid something larger and came across the Yukon. It gets splendid gas mileage both city and highway and it’s much more roomier than the vehicle we have now. But I am wondering why it is that the Acadia gets better highway mileage than the Yukon? Anyways what are your opinons?