Well I wasn't yet born in 1979, but I did start commuting quite early in my life, I think. I did 7 miles each way to school when I was 16. I did it every day except when it was raining hard forcing me to take the bus instead.
It involved a short but really nasty stretch of 60mph main road and, thinking back, I just did not have a clue how to take the lane in order to turn right back then! I sometimes had to wait for ages to get into the central reservation. There was an incomplete off road cycle path parallel to the road, but the part that was missing was the only part that was actually necessary! Long after I left school they finished the cycle path and put a 40mph limit on the road due to the high number of accidents...