While you are driving, always keep the cat confined in the carrier. This ensures safe, comfortable driving for you and your cat. Place a soft mat or cushion on the carrier floor. During hot weather never put the carrier on the sunny side of the car where it will become overheated.
One of the greatest dangers to a cat is leaving it in a closed car, even for a few minutes during hot weather. Cars heat quickly and leaving windows open a few inches does not always provide sufficient circulating air to keep you cat cool and comfortable. Insufficient air can lead to heat stress, suffocation and death.
If it is necessary to leave your cat in the car for a short period of time, choose a shaded area. Leave the windows open as far as safely possible to provide air circulation. Keep the cat in the carrier. Check the car frequently and never leave your cat for an extended time. Motion sickness may be a problem with your cat. If this occurs and if taking your cat with you is essential, discuss preventive measures with your veterinarian.
If the drive is eight hours or longer, give the cat an opportunity to use a litter pan every three or four hours.
If the cat is inclined to have accidents along the way, put newspapers on the bottom of the carrier and sprinkle cat litter on them. The newspaper and soiled litter can be removed as needed.