A big improvement
We got the pups seatbelt harnesses-there's a loop to slide the belt through-for when we drive them to the vet, grooming, doggy day care etc. Vast improvement over having them in crates-I was always worried they'd end up banging into the side of the crates if we braked suddenly. This seems to keep them stable with minimal risk, and I can sit in the back and pet them.