Question: What  large family car produced by by the German automaker Volkswagen, is the middle of two other cars one being  small family car marketed worldwide across seven generations, in various body configurations and under various nameplates ?
Sentence (from "Volkswagen Passat"): The successive generations of the Passat carry the Volkswagen internal designations B1, B2, etc. which originally ran concurrently with those of the Audi 80 and A4 with which the Passat has shared its engineering platform at certain model generations, although this link has now been severed.
Relevant evidence: No