The problem with roos and detection systems is the same as with roos and fences. A big roo can jump more than six feet off the ground. And not just roos are car hazards: hitting a wombat is like hitting a boulder in the road. Though the most damaging accidents I have been in with animals have been when the driver of the car I was in hit a horse which was standing sideways in the road on a blind corner north of Alice Springs (fortunately for us what broke the windscreen was the animal’s back rather than its hooves), and a wedgetailed eagle that came straight through the windscreen of a truck in which I was a passenger as it came down a slope in the Blue Mountains. Being in a truck cabin with a big, injured and very angry bird of prey was extremely unnerving.
