Quoted from zr11990:The question I left with, or one of them, was; how did TK get out of the car without Mary Joe getting out? The movie pretty much shows that TK got out of the car but she was left in it and did not drown but suffocated inside. If he got out would the car not be full of water?
She was already dead, Teddy put it in neutral and rolled it in. Joe took care of the rest.