When Axel is trying to persuade Edie to get into his car so they can flee, Perry and Paul jump out of their car to stop them. But Perry's car wasn't there a minute earlier and didn't make a sound as it drove up (neither Axel nor Edie, who was facing in their direction, saw or heard them drive up). The police car could be heard as it drove up a few minutes later. Perry's car apparently was pushed into place or was driven there between takes.