Dogs:
Not bad. You have potential. However, not perfect. See you forgot at least two other potential defendants, to wit, 1) the state since surely some road defect caused these vehicles to leave the traveled portion of the roadway striking the tree, and 2) God for the wrongful placement of the tree.
You know, looking at these pictures really makes me salivate. Kinda like I imagine you do when you get a premium check in the mail and/or when you can tell one of your clients that their claim is not covered.
Ed