Read it about thirty years ago and it was a 'one-gulper' at the time; I might see it differently now... or maybe not. At the most elementary level, I was struck that he noted the way you can smell things and feel tiny temperature changes on a bike, and how a car carries with it a cage of the familiar that keeps you from being entirely where you are, the way bike touring lets you be.
True all dat.
My favorite ride in the spring takes me past blooming honeysuckle that perfumes the air, then past a field of wild onions, and then along a long strait stretch where the temperature will drop twice in a five mile stretch. Funny thing is that the same road in a car is boring. On a motorcycle it's bliss.
Without a doubt, one of the coolest things about being on a bike.