Has anyone found a pet barrier that can fit between the hatchback/trunk area and the back seat (2006 Prius)? We have a medium-sized dog that keeps jumping from the way back into our kids' laps--not a really safe situation! The only post on this that I've seen said that they had to cut an inch off of the barrier's metal poles. I'd like to avoid that kind of ad hoc solution if I can. -Thanks.