Jack notices a camera on the bus; Payne has been watching them all along. Jack has the idea of going to the airport where the restricted airspace will stop the TV choppers from filming and the police set up a tape of the interior of the bus whilst driving normally and transmit it over the frequency that Payne is watching. He thinks he is watching what is really going on on the bus but actually the police are loading everyone off.Eventually Payne notices a glitch in the tape and, dressed as a policeman, kidnaps Annie near where he's meant to pick up the money. He knows the money will be a sniper set up because he knows everyone is probably off the bus so he tunnels underneath the spot where the money should be and swipes it that way, making his getaway on a subway train with Annie all done up in an explosives vest.Jack goes after them, fights Payne on the roof of the train and knocks his head off on a passing light. Jack goes back in, finds out the track is a dead end so they have to get off the train. Payne has handcuffed Annie to it unfortunately, so instead, Jack speeds up the train to jump the tracks and it plows out onto the busy street above.They then resolve to base their relationship on sex.
Whatever that means.
"We'll see what happens." (actually, that expectation is one of the foundational misconceptions… we see almost NOTHING of what happens.)