Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to deal with car sickness in cats [title] Ensure safety for you and your cat. [step] Safety is the most important thing to consider when traveling with your cat. This is especially true since your cat could interfere with your ability to drive.

Ending1: However, some safety measures can potentially create anxiety for your cat. [substeps] If you use a harness or another device to secure your cat to the seat, make sure your cat is comfortable in it. Ending2: Watch out for potentially hazardous places that might obstruct your ability to drive safely. [substeps] Don't take trips where your cat can get injured. Ending3: Your cat could become irrational and lose a limb, or it could seriously injure itself in the process. [substeps] If you are traveling with your cat, take care that its environment is safe and that you have adequate equipment to appropriately handle your cat. Ending4: Tell your vet that you are considering getting a car run to ensure that your cat does not injure itself while you are out grocery shopping. [title] Decide if you want to bring a companion.

Answer format: ending1/ending2/ending3/ending4