Ah I mean if that's the only thing you'd be buying the generator for, you're right, it's probably not worth it. if you're buying a $70,000 truck, the cost of a big genney shouldn't be out of reach. If you're a construction worker of some sort, which people that own trucks often are, you probably already have a gennie for the job site. Yeah they're heavy and lifting it onto the bed is a pain, but get ramp or a buddy to help. if you've got toys with you (aka an ATV) you'll have a ramp anyway. Imo it's a decent backup plan if you're going to go off-roading with an electric truck because what are you going to do if the campground spots with electricity are already taken?