When Gene Wilder and Harrison Ford first meet, Gene repeats the instructions Ford gave him to reach San Francisco. Gene heads off and Ford asks " Do ya speak Mexican do ya?" indicating that Gene is heading south toward Mexico instead of west toward California. Then Ford says " That way!" and points strait out with his left hand. Since Ford is looking toward Mexico, which he is because he's looking at Gene, who is heading that way, He should have used his right hand pointing to the right. Then he would be pointing west. Can't get to California the way Ford pointed.