I'm so sorry, that must be so horrible. I would just die if that happened to my dog. It kind of did in a way a long time ago. We had got an airedale terrier and named her Mea, and when she was 2 she ran out on the road and a truck was coming and she was hit by it and rolled all the way under it. When we got to her after the truck passed (he did stop though) she was almost dead, she had broken a couple of vertabras in her back in we had to put her to sleep. We got another one and in memory of our dead one named her Mea too.