Animals and truck stops

So this month it’s just me out here, the s/o stayed home. I kept the cat but I’m clueless as to how I’m supposed to keep the truck a decent temp when I go into shower.
My company would fire me if someone seen me leave the truck running without me being in it. However it’s 98* outside and I am not gonna let my cat die.
A temporary thing I’ve done is plug in the old refrigerator and tie open the door with a cat bed inside. He likes it but I’m gonna need to actually get a new one and keep food in it.

Should I risk leaving the truck running?
Is there any tricks or products out there any of you use?

 

I’ve have to work here atleast another 5 months so I don’t have to dip into my savings. After that I’m gonna be leaving.

 

Company policy is if you leave the truck take the keys and revelco with you. If the truck is stolen and he didn’t follow policy he is liable

 

It was explained in orientation very seriously

 

I really wish they would do away with this goofy ### revelco. They had air line locks in the white trucks and you could idle them and leave it locked and you couldn’t go anywhere. (Would lock both tractor brakes and trailer brakes)

 

Guess the cat has a new box. I’ll have to take out the shelves and make a flap door. Looks like I’ll stick to vacuum packed foods for the month.