This is what my Mazda does, it's perfect. The big knob does exactly what you describe, where turning the knob scrolls. There's also a small dedicated volume kno

This is what my Mazda does, it's perfect. The big knob does exactly what you describe, where turning the knob scrolls. There's also a small dedicated volume knob that you can push in for mute and left/right to change tracks, and dedicated home and back buttons next to the big knob. All easy to use without looking.