Continuity mistake: When Stuntman Mike is eating and talking to the blonde girl in the bar, he is holding a glass of club soda. When the shot reverses, he is wiping his hands, then when the shot returns, he is holding the club soda again.
Continuity mistake: During the final chase scene, as Stuntman Mike started for a while to dab the girls' car, in a scene the shadows of the cars change size between one shot and another.
Visible crew/equipment: At the end of the movie as Stuntman Mike is being chased by the girls on the highway, in a shot of him while driving, the shadow of the camera mounted on the car's door is visible on his shoulder and on the seat.
Answer: Since the actor is the same actor who played the raping guy in Kill Bill, it's seen as a hint that she is, in fact, raped.