A friend of mine tried one, and it didn't take too long for the dog's pads to be worn and bleeding from running on the pavement. His dogs get a lot of exercise, too, but not on pavement. I doubt you could get the pads hardened up enough to give them enough exercise. I ride with my dogs all the time out on country roads where there is little traffic, but you always have to be watching and call them back and make them sit while traffic passes.