Thanks for sharing the post. Iv'e already been on some of those very same roads over the past 3 years with my GL1500 and trailer. You should have seen some of the looks I received goingover the Grimsel pass from Switzerland to Northern Italy with the Wing and trailer in hot persuit. What a fantastic trip it was. I can only guess at what fun the group in the photographs had as well.
Reminds me of my English friend who used to ride in that era... He mentioned how Long it would take to go a few hundred miles on thos old bikes, because they would break down so often. An implication of that was, when meeting someone a few hundred miles away, the message you'd provide them (by mail, ahead of time) was to "Wait for me by the clock tower [because every town had one] at noon until I arrive"... that host would then duitifuly sit at the clock tower Every day at noon, often returning for several days, until the visitor would finally arrrive! They simply did not know How Long it would take, to get from A > B, yet nobody cared... Time was Cheap then!