To prepare for some scenes in which her character is drunk, Mary Elizabeth Winstead would spin in circles to make herself dizzy.
The bicycling scenes were filmed without stunt drivers or driving extras, in actual Los Angeles traffic.
Aaron Paul and Mary Elizabeth Winstead claimed that they went on one real binge drinking night during filming, which was video recorded, so they could see in playback how they would interact while drunk.
Was filmed in a total of 19 days.
To simulate urinating, Mary Elizabeth Winstead wore a bag of liquid on her thigh under her dress and pressed it with her elbow while squatting.