The wire ropes also don't tangle as easily, and don't rattle like chains do. I bet he'd get used to it very quickly. And even a frustrated dog is better than a dead one.

Every dog I have known who liked to chase cars was eventually hit by them, with the obvious results. Yet the one Old English Sheepdog mix, who lived up the street from us, safely chased the school bus every day - from the safety of his tie out. He's "chase" the bus from one end of his yard to the other, and be so triumphant when it "ran away"!