Absolutely right, Gretchen. Cubic feet won’t really tell you if the harp will fit. You need length and width, but I can tell you from experience that the way to know for sure is to do exactly what Gretchen says, and I just did that. I drove a Grand Caravan from the dealership to my house, loaded my harp, unloaded it, drove back to the dealer and bought one. In the past I have measured, and I ended up with a car where the harp needed to be manipulated, loaded weirdly. It made loading and unloading quite difficult. Take the car to your house and load your harp.