Logi - I was so sorry to hear about Shep! I know what it's like to lose a beloved pet and my heart goes out to you and your family. Go easy blaming yourself - some things are just out of our control. Once you've had some time to heal, look into getting the town to install speed bumps or be more aggressive with catching speeders in your neighborhood. It won't bring Shep back, but his death won't be in vain.