Keeping your cat cool
Cars can heat up quickly, so it's important to keep a close eye on your cat to make sure they're not getting too warm. You should give them access to fresh water throughout the whole journey, and keep the carrier well-ventilated at all times - the best way to do this is simply to open the window vents in your car, or even to attach a small fan to the carrier.
Don't let your cat out of its carrier at any point during your journey, even if you think they are getting too hot in the car - instead pull over and take a break in the shade. A car window cover is a great way to keep the sun off the carrier and help your cat keep cool.