I learned how to read and drive many years ago when I was driving thousands of miles a month, mostly in Nevada. You just glance up from the book every few seconds, and then read another bit, and so on. You can follow the book, even get right into it, but never did I fail to keep the glancing-at-the-road routine going at the same time, and I never drifted out of my lane. It just doesn’t take your full-time attention to stay on a straight and empty road, and it’s too easy to fall asleep without something to occupy your mind.
This worked well on rural Interstates and some two-lane highways in the West. Of course, whenever another vehicle was in the vicinity, I’d stop reading until I had the road to myself again.
During the idiotic Carter years I read half the western canon on the road.
Fifty-five on the interstate in North Dakota, Montana and Wyoming was like walking up the down escalator.