(S (S (BASENP (DT This) (NN study)) (VP (VBD was) (VP (VBN motivated) (PP (IN by) (NP (BASENP (DT the) (JJ new) (NN design)) (PP (IN of) (BASENP (NN 2006) (SYM +) (NN model) (NNS cars)))))))) (PERIOD .))