Just gonna say. A dog should never be left in a car even if there is ac, water, and music. If you know you have to leave him in the car then just don't go anywhere or leave himher at home where there is water, fiid, and plenty of a/c.
Traveling with Pets: Cargo vs. Carry On vs. Baggage
We break down the difference between traveling with your pet on a plane in the cabin, in cargo, and in baggage so you know which option works for you.