I'm going to leave my dog in the car
Why are you going to leave your dog in your car?
Since it's hot outside, I thought that the dog would be able to take it because dogs can't sweat.
Leaving a pet in a hot car is very dangerous and your dog can die if the temperature inside the car gets hot enough. Do not leave your dog in the car and instead try to leave your dog at home where it will remain safe and cool.
My dog won't die from being in the car.
Dogs day all the time from being left in the car. I think you need to look up more information on how to be a responsible pet parent.