I always thought Radioactivity (album) is the one and only bi-lingual KW album.
Even more creepy ... !
From that bastion of truth, Wikipedia;
“All of Kraftwerk's albums from Radio-Activity onwards have been released in separate versions: one with German vocals for sale in Germany, Switzerland and Austria and one with English vocals for the rest of the world, with occasional variations in other languages when conceptually appropriate...”
“…Electric Café, in versions sung in English and German, as well as a limited "Edicion Española" release, featuring versions of the songs "Techno Pop" and "Sex Object" that had only Spanish lyrics.”
Note 1: In Spain the album was released in two versions. One was the regular English/International edition, and the other a local Edicion Española version, appearing early in 1987, with Spanish-language lyrics for both "Techno Pop" and "Sex Object" (often mistakenly titled "Objeto Sexual" by discographers). The Spanish-only vinyl album was withdrawn soon afterward because of a manufacturing error—a several-second complete drop-out of sound during the final track—and has never been reissued on CD. Both versions were also available as a cassette.
Note 2: The song "Sex Object" is absent from the South Korean pressings of the album.