We waited to take our dogs in the Tesla. Had the pet cover, but didn’t have the mattress. Put it all together, and not sure if it’s the combination of the two, or the smoothness of the Tesla, but our dogs, who were ALWAYS restless in my wife’s Tahoe, laid down the whole time and just watched out the windows. Our Boxer was amazed by the roof, but our older Shepherd with her bad hips LOVED the mattress. They both thank you!! We haven’t tried it ourselves, but the dogs are thrilled!