I recently found out as I was searching for wiper blades that there is now a divider for big dogs that you can attach to the back seat. It would act as a barrier so there is no way they could jump to go to the front seats! I think this is really essential for me and could prevent accidents. What I have before is a net barrier which they chewed in our trip to colorado so I would say this is an upgrade. Hope I could help other big dog owners!