daft running it off the car mate way to young, and dont realy like runnin off the car but ive not tryed it so carnt diss it.. ive a 6 month pup and carnt tire him out i walked him for 2 hours yesterday and he still wasnt tired after runing around the whole time with my other lurcher,,, i also take them for 15mins on the lead at night.. i do this every day but walk a diferent place each time as i get bored of the same route and like to have a ratch about for places to lamp