I googled how fast a dog can run, and it seems the range is anywhere from 19-45 mph which would (for us canadians) be approx 30-72 km. Hopefully my dog encounters are few and far between. I have driven around the area which rabid dog materialized from twice now and haven't spotted the dog. Hopefully this was just a one off. I think the water bottle squirt could be quite effective, but knowing me I would be in a state of panic and I would probably throw the water bottle at the dog lol
Thanks to all that responded