Looking for a motorcycle quote, I found this interesting passage that explains hiking, biking, as well as motorcycling:
“In a car you're always in a compartment, and because
you're used to it you don't realize that through that car
window everything you see is just more TV. You're a passive
observer and it is all moving by you boringly in a frame.
On a cycle the frame is gone. You're completely in contact
with it all. You're in the scene, not just watching it anymore,
and the sense of presence is overwhelming.”