Even though the dog has been domesticated for thousands of years, dogs still have many traits and characteristics that are inherent in wild canines. The chase of prey is one of these traits, and some dogs that still have the urge to run down wild prey may chase cars. In these cases, a car has taken the place of wild animal that the dog wants to chase.
Once car chasing behavior has developed it can be very difficult to stop. Pet owners can try to increase their dog’s level of activities by playing with their dog more often and taking their dog for plenty of walks. If the dog is chasing cars due to boredom, then livening up your dog’s life may stop the behavior.