I stumbled into this little short film which gives a view out the back window on a typical stretch of autobahn in the mid-60s, including some very impatient drivers. The BMW New Class (1500/1800) behind the red VW shows that the stereotype about BMW drivers was formed early.
The second half unfortunately has very little traffic. The second half is quite familiar to me, as it starts just at the north end of the Europabrucke, on the Brenner Pass autobahn just outside Innsbruck. I’ve driven that stretch quite a few times, including getting on that very short on ramp at 2:12.