 The bank heist sequence was done entirely in one take, with no one  outside the principal actors and people inside the bank aware that a  movie was being filmed. When John Dall (I) (qv) as Bart Tare says,  "I hope we find a parking space," he really meant it, as there was  no guarantee that there would be one. In addition, at the end of the  sequence someone in the background screams that theres been a bank  robbery 