Can anyone help us with our canine problem? We have just acquired an ML320 and find that our dogs- three of them ( two spaniels and a lab) - slide about in the back boot. We have tried putting a rug down to help make the carpet less slippery for them. Has anyone any ideas of how to pad out the edges of the boot to make it more comfy for travelling esp when cornering? Any suggestions from owners who have found the same problem , would be really appreciated. Many thanks