Just wanted to share something that I've stumbled across a while ago. It is the old highscore list from this game which you can still find via the wayback machine . Unfortunately there is only the Moorhuhn X 50cc time left because the archive only stores information which is directly available to browsers. And the website including database and php script is long gone forever. You can still however download some of the phantoms.

https://web.archive.org/web/20070202013319/http://www.moorhuhn-kart.de:80/mhk2/highscore.php

Don't know if anyone finds this useful but I just wanted to share.