Question: When they notice there's a gap in the freeway they keep to that route. However, there were other routes available. Why not take them?
Question: How would you get on the roof of a moving subway? We don't see it in the movie (Jack looks up and starts to climb - cut - Jack is on the roof.... Howard cries 'I'm coming for you Jack and runs - cut - Howard is behind Jack on the roof. after the fight when Howard 'lost his head' - cut - Jack is inside the subway again...).
Question: Why did Jack think the only option available with the gap in the freeway was to jump it? Wouldn't it have made more sense for him to at least try to ring Payne and explain what was happening? A simple "We've ran out of road, could you disable the bomb whilst we turn round" - Payne could still detonate it remotely so it's not like they could use that opportunity to unload the passengers.
Question: On the phone conversation, Howard Payne claims that it took him two full years of his life setting up that elevator job and investing himself in it. So how is he able to move out of his old retirement home and relocate in an apartment building in downtown LA near Pershing Square, rig 2 city buses with a handheld remote with C4 bombs, rig his old home, cut the hole on the street underneath the garbage can and think of that revenge plot and plan and set up everything else in just a month. That's just not enough time for him to do all that.
Question: When Jack catches up to the bus for the first time he is running along the side of it and he smashes the window in the door, what would have happened if the driver stopped the bus and let him on to see what the problem was? Was the bomber just hoping that that wouldn't happen?
Question: I don't quite understand the part of the movie regarding the camera recording inside of the bus. It seems obvious they can pick up the signal to the bus via UHF, then tape it, then make the loop so the same tape runs over and over, fooling Dennis Hopper long enough to facilitate the rescue. But how do they transmit the images from the loop back to Hopper's safehouse?
Question: What is that device that Payne uses in the elevator? He punches 46 into it and the elevator starts going up, but later he pushes the number 3 on the elevator buttons themselves and it start going down.