Song Jiang, Lin Chong and Wu Song each bought a car, namely BMW, Audi and Land Rover. Wu Yong guessed that Song Jiang chose Land Rover, Lin Chong would not choose Audi, and Wu Song certainly did not choose Land Rover, but he only guessed the choice of one of them.
Song Jiang chose Audi, Lin Chong chose BMW and Wu Song chose Land Rover can be inferred.