In the cut scene where Mia shows the player how to use the Rap Sheet, the device she's holding changes position between shots.
When the player finally escapes Rockport, Sergeant Cross puts the blue BMW M3 GTR on the highest possible wanted level and writes into the police report that maximum force is to be used against that car. However, when the player returns to Rockport post-game completion, the BMW is treated as any other car in wanted level, making Sgt. Cross' report obsolete.
No matter which opponent you encounter male or female, the person inside the cars all have the same male face.