It's mph, tourist delivery cars are US spec and then shipped home.
The trip was just prior to the get off ramp in Rothenburg. The trip was in 97 and I hadn't noticed until recently that the date was 911. The other fact is that I was in a 97 C4S, so that make the car a '91 911 too.
Germany, I believe, is the only place left in Europe with any unlimited speed roads, most of them have those electronic boards over the lanes near metro areas that can regulate the kph depending on conditions.
I am going over again in May and I'll see if I find any good open areas. On that particular run I had a Kawasaki that was staying with me between rolling traffic slow downs until I hit about 140 mph, my wife pointed out not to expect her to ride with me over 100.....the KAW had a female passenger that would sit up when he slowed down to around 105 mph and she'd tuck her hair back under her helmet. (Now if you ask me she had som major balls)