*Caro I am sorry to hear about your wrist! I know how you feel about a dog that constantly lunges after cars, that was and still is but to a smaller extent, my Maia. I could not take her on walks without her almost hanging herself on the leash trying to get at the cars. I used a gentle leader with her and that seemed to do the trick. So I went back to her regular collar, but now she is starting to lunge again, so I gues it's back to the gentle leader for her.