I won't restrain my dogs in the car unless they are interfering with driving. I was in a wreck, gas tank ruptured, frame bent so back door wouldn't open, and my 8 year old son was trapped in the backseat, while I was standing in gas up to my ankles. I won't use child safety locks either, as that was why he couldn't open the other back door himself. This was a three car wreck, I was in the middle, and had to run around two cars to get to the other side and get him out. I was an EMT and responded to many wrecks, I know all about seat belt safety, but I won't restrain the dog. Everything needs to be considered and our life experiences effect all of our decisions.