I will definitely bring the cello case along if I get anything smaller than the Rogue. Though my S’s first car, a car that my Dad gave to my brother who then passed it along to my S was a 2 door Ford Escort and he managed to fit his cello in it and could take 1 passenger as well. I would like to find him something this go around that will fit the cello more easily and last him awhile.
Although this may seem a little picky, I’d also consider the temperature in the rear of the vehicle if you live in a very cold or very hot climate. That may save some retuning time and thermal stress on the wood.