While this dog is anything but little, leaving him inside your ride at any time has got to be brutal for him. The fact that this monster gets as huge as 30 inches at the shoulder, almost 7 feet in length and up to 250 pounds in weight, he’s pretty much bigger than the backseat of your car. To even be fair to the poor fellow, you’d probably have to keep all 4 of your windows open to give him some breathing room. At the rate your going, you might as well buy a horse trailer. At least, that way, he’ll have some space to move around.