《不花钱游南美》RobGreenfield,adventurer,humanitarianandenvironmentalistissettingoutonajourneyacrossSouthAmericawithadifference.AlongwithDocumentarianJamesLevelle,Robwillbetravellingwithnomoneyatall,insteadrelyingonthegoodnessofothers,makingmoneyfromworkingandsleepingrough