(S (S (S (BASENP (JJ Such) (JJ high) (NN speed)) (VP (MD will) (VP (VP (VB be) (ADJP (JJ impossible))) (PP (IN for) (NP (BASENP (DT the) (JJ current) (NN test) (NNS vehicles)) (CC and) (NP (BASENP (DT any)) (VP (VBN launched) (PP (IN in) (BASENP (DT the) (JJ foreseeable) (NN future)))))))))) (COMMA ,) (SBAR (IN as) (S (BASENP (PRP they)) (VP (VBP rely) (PP (IN on) (NP (NP (BASENP (DT the) (NN light)) (PP (IN from) (BASENP (DT the) (NNP Sun)))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (ADVP (RB rapidly)) (VP (VP (VBZ becomes) (ADJP (JJR weaker))) (PP (IN with) (BASENP (VBG increasing) (NN distance))))))))))))) (PERIOD .))