makes a joke out of car chases for an hour and then gives us half an hour of car chases . 
(ROOT (S (VP (VP (VBZ makes) (NP (DT a) (NN joke)) (PP (IN out) (PP (IN of) (NP (NN car) (NNS chases)))) (PP (IN for) (NP (DT an) (NN hour)))) (CC and) (ADVP (RB then)) (VP (VBZ gives) (NP (PRP us)) (NP (NP (PDT half) (DT an) (NN hour)) (PP (IN of) (NP (NN car) (NNS chases)))))) (. .)))
(ROOT (S (VP (VP (VBZ ) (NP (DT ) (NN )) (PP (IN ) (PP (IN ) (NP (NN ) (NNS )))) (PP (IN ) (NP (DT ) (NN )))) (CC ) (ADVP (RB )) (VP (VBZ ) (NP (PRP )) (NP (NP (PDT ) (DT ) (NN )) (PP (IN ) (NP (NN ) (NNS )))))) (. )))