1994, Germany-- my sister came to visit for a week. I had a 1979 Opel Kadett but decided that with the amount of traveling I was going to do, showing her the country, I'd better have something a little nicer and rented a new Opel Vectra.
Drove from Nuremberg to Berlin one night. She woke up, and finding us zipping along the Autobahn in the dark, asked
"Where are we?"
"Somewhere near Bayreuth."
"How fast are we going?"
"Two hundred K."
"......How fast is that?"
"About 120."
"Oh..."
...and went back to sleep.
Good memories.
(The Kadett would just about do 100 K, if as with the Aspen story above, you were going downhill with a tailwind.)