Thank you very much Sirs!
I did not recognize that my Z is COTM before you wrote this! Wow!
@Asbjorn: The Z is great for longer road trips! And it is not thirsty aside the German Autobahn...
I reduced the fuel consumption from 13,8 l/100km avg to 8,14 l/100km avg on the French Autoroutes with their 130 km/h slow speed limits - that is boring to drive, but it's nice to know that the N54 can be so economically.
Below, another picture from the Cote d'Azur: