During the car chase, the model of the blue car changes back and forth. You can see this by looking at the grill, for most of the chase the badge is in the middle, but at one point near the beginning, and once the car is at the cliff edge the badge is in the top right hand corner of the grill.
Molly Keller: For a time there I wasn't thinking clearly. I was confused. In limbo. I mean, this is 1888, right? I knew I was Jack. Cunning Jack. Quiet Jack. Jack's my name. Jack whose sword never sleeps. Not the good shepherd. Not the prince of peace. I'm right Jack. Spring out Jack. Saucy Jack. Jack from Hell. Trade name: Jack the Ripper.
Marshall Kane: What if I told you I was going to murder one of you today? What if everything I have accomplished in my field thus far was a vicarious way to experience what I'm really drawn to? And what if the truth is that I've studied serial killers all my life because subconciously I wanted to be one... but was too scared to admit it? And what if I had medicated myself for years, seen psychoanalysts to repress this desire and finally, two weeks ago, stopped taking the medication and decided to step into the abyss?