Load it full of gear and it drops to around 100, I'd bet. That's fine if you have a fleet of them, and you're delivering in a city. But, no one is making a usable campervan out one of these.

EDIT: I was imagining taking one into backcountry, not driving to a commercial "campsite" and plugging in. If all you plan to do is drive between parking lots, then yeah, it would work.