Looking for air cooling for truck bed

Now that our family has expanded it is getting certainly cramped transfering all the people in the cab of our pickup truck.

  • I absolutely do not want to trade the truck in for a minivan or an SUV.

I am a truck girl through as well as through, then however, I would absolutely like to find a way to cool the covered bed of our truck so that our immense hound pet can ride back there. This would free up a lot of space in the cab. The only issue is that it might get warm in the truck bed, and of course, I never would leave our pet in the car unattended however I would like to find some sort of air conditioning that works in the bed of the truck while she travels back there. I was looking at some of those portable air conditionings that can be restrained into the cigarette lighter but they have certainly mixed reviews. It seems they are more of a swamp cooler than an actual air conditioning as well as I don’t think how much help they would absolutely offer in cooling down the bed of our truck. I saw someone with a real window equipment air conditioning system hooked up to the bed of their truck. I am not sure how they are supplying that much power to run the air conditioning though. I suspect the window air conditioning system is only used when the truck is parked. They honestly camp back there or something. I think I am just trying to figure out if there are any absolutely air conditionings that run off of the cigarette lighter that could keep a covered truck bed cool enough for our cat, however so far, I have not found any.

Steam boiler