I think roos will stay a problem. On a lot of roads a mob will be grazing on the side of the road and as your car approaches they will bound across the road giving you very little time to react. They will also hop alongside your car and it they manage to get in front they'll suddenly jump in front of your car. It's said that they get mesmerised by the headlights and the only solution is to turn the lights off - not ideal on a dark outback road. Bear in mind there may be a lot of them, not just a single roo. This is quite a problem for artificial intelligence to deal with.