hi...lol where in Switzerland are you? I live near the German/Swiss border and go to school near Stein am Rhein
the x-Drive is like no other AWD system
http://de.wikipedia.org/wiki/XDrive
http://en.wikipedia.org/wiki/BMW_xDrive
the article is wrong, btw... the first x-Drive cars were introduced in the E30 series (my car's series)
EDIT: don't forget to check out the websites quoted at the bottom of either wikipedia article