We generally rock out to our classic rock in the car because the dynamics of classical music frequently vary so much. I find myself constantly adjusting the volume to try to keep up when classical is playing. With classic rock it's adjust volume and done.
We both do love classical just as much if not more than we do our classic rock.
Blasted "Helter Skelter" last weekend during a trip up to Tulsa, Oklahoma. Except for the fad near the ending, it was easy to hear.