2014 Nissan Frontier PRO-4X Off-Road Review: Fear And Loathing In Moab - Jalopnik

There's plenty of power for driving at any reasonable speed with the truck filled to at least half it's payload capacity, and it seems to be disproportionately efficient at lower speeds. I think that has a lot to do with aerodynamics, which become a bigger tax on the highway. Especially if your truck bed's full of tools and empty beer cans. Source: truckyeah.jalopnik.com