I always thought that our family had plenty of room in our SUV for all of the extra stuff we had to carry with us. In fact, it actually was plenty of room especially since we owned a Toyota 4Runner that had plenty of cargo room. Even with longer items, we were able to fold down the rear seats and fit a variety of different things over the years. Eventually, our family grew and I realized that with more kids (and more car seats), the less space in the back we had for carrying stuff. We chose the Yakima Skybox 16 mainly because I knew that it would provide plenty of room for our things, but also would fit well on our 4th generation Toyota 4Runner.