I just saw this on You Tube. The color was all washed out but I can see why it's very popular. Of course, the animation has zero to do with the Kraftwerk song, "Autobahn".
Now, about the "fun fun fun on the Autobahn"... I've heard dozens of people sing this and I still find it hysterical. It's actually German, as in, "fahren fahren fahren auf der Autobahn "... heh heh!
Here are the English lyrics for all you 'fans':
We are driving on the Autobahn
In front of us is a wide valley, The sun is shining with glittering rays
The driving strip is a gray track, White stripes, green edge
We are switching the radio on, From the loudspeaker it sounds thus: (radio noise)
We are driving on the Autobahn