Movie in which escaped convict takes old man's wife from his limo.

There was a movie I watched long ago in which two escaped convicts take an old man's hot blond wife from his limo. The one convict kills the other when he gets excited at the idea of having his way with the woman. The convict and the wife head to a hotel room where she says that she's gonna have a shower. That's all I saw of the movie. I was wondering if anybody knows the name of this movie. in the beginning the wife says "I'm going to kill you!!!" when she's having sex with the old man. My cousin told me the old man shoots them both dead at the end of the movie.