I've been known to take my slow cooker or Instant Pot into the field and serve on the tailgate. But....I can't be there at every beck and call. I'm running busy, too! So sometimes I'll send a prepped meal along and with a heated lunchbox. Seriously, it's a thing! Ours can plug right into the cigarette lighter or outlet, though in a vehicle, we go with the lighter version. I'm sure there's a more technical name for that.