The car is the most common way a Polish rabbit will travel, and its small size makes it relatively easy to transport. A secure, well-ventilated carrier keeps the rabbit safe during the journey and gives it an enclosed space where it feels protected.
Heat is a serious risk, and a parked car can become dangerous very quickly. The vehicle should be kept cool, the carrier shaded, and the rabbit never left alone in a closed car in warm weather.
Familiar bedding in the carrier, along with hay and access to water, helps keep a small rabbit calm on the road. A quiet cabin and gentle driving reduce stress for an animal that is easily startled.