Simple question, but the answers might be tough...(SPOILERS)
1) In the original run-through, the Mexican guy got a flat tire and didn't make it to the store on time. The flat tire seemed inevitable since it happened even when the therapist was driving the car. How come he was able to get there in time to be killed for the ending?
2) How come Rayanne's gun jammed the first time she tried to shoot Frank? But, in the ending, she was able to shoot the hell out of him, with multiple hits.
3) Shouldn't the kid have been aware of having been sent back in time, even though he didn't go along for the ride during the last time jump? The one time that he did go back, he 'woke up' just before they got to the station. Since there was nothing anytime along to way to slow them down, during any timeline, he should have jumped into the car again before it got to the station. He showed no indication of awareness in the final scene, when his father just avoided the store/station all together. It didn't really matter then, since they would have been safe anyway.
4) Who shot who, in the ending? Leaving aside the fact that the Mexican guy shouldn't have gotten there at all, that is. Everyone had their gun in their hand.
5) Karen wasn't the least bit surprised to see that everyone was dead at the end, except Rayanne? It seems to me that there was no reason for anything different to have happened than what happened the original time. Karen passed up the offer for a ride and only said, "Now you take care of yourself, lady.", to Rayanne before they drove off. How the hell was that supposed to enact any kind of change? Somehow, it seemed to magically do a lot, including preventing a blowout in the red pickup truck.
6) Did Frank only go back once? That's what I thought, originally, but then how did he know how to get into the facility? He told Brian that he had showed him how, and Brian seemed shocked. Was there a jump that wasn't show?
7) What did Karen say to the cop near the ending that sent him off with siren blaring? And how did that idiot cop avoid shooting himself in the foot at any time during this movie? Geez, he seemed like the slowest acting police officer, ever! During one jump back, Karen and Frank are struggling in the middle of the road for a gun, the cop is standing there, but he never pulls his own weapon out? He became an easy target when Frank gains control of the gun.
I actually liked this movie, though, in spite of what seemed like flaws to me.
Layback
There are no stupid questions. Just questions from stupid people.