I've the 1987 edition of Auf Achse. Would be interested in an answer for that and if it's any different in the 2007 version.
When moving past other trucks, the rules translation we have (from the Games Cabinet, a pre BGG resource) uses the word 'miss' for the occupied space, so we treat the occupied space as if it does not exist. However, I'm not that confident of the translation given a number of other errors.
We play that a roll of
3 results in:
-- Started here -- Empty space -- Another Truck here -- Empty space -- Ended up here --
Is this correct?