Continuity mistake: When Wilee phones Manny early on in the movie, Wilee unlocks the chain to his bike and the bike and chain fall to the floor. Wilee then picks up the chain and doesn't pick up the bike. But by the time he finishes the call with Manny, the bike is now back to being laid against the tree, when it was on the ground moments earlier. (00:05:00)
Visible crew/equipment: At 5:17pm, after Manny asks Wilee to bike ride with him in Central Park, Wilee is seen driving through traffic. There is one shot where he rides past a silver Ford. Behind the silver Ford is a taxi, and if you look carefully, you'll see a boom mic reflected on the car. It can't be a lamp post, because the item on top is too big and super fluffy to be a lamp post. This is only visible for a split second and visible just as the taxi becomes out of frame as the camera pans around Wilee. (00:07:45)
Continuity mistake: Whilst riding through New York at 5:17pm, Wilee drives past a silver Ford. As he does this, a taxi is visible behind it. But when the shot cuts, the taxi has suddenly become a black car. (00:07:50)
Plot hole: Bobby confronts Wilee on the college campus to give him the envelope. Whilst the confrontation progresses, Wilee gets away from Bobby after distracting him by holding his sandwich by riding his bike off the college campus, onto the main road and never stops. During this ride, he drives past the gaps in several cars and taxis. Within a minute and a half, Bobby then manages to catch up with Wilee. There are two things wrong with the time it took Bobby to reach Wilee. First, there were loads of cars that we would had to have drove past in order to get to him. The problem with this is that Wilee managed to get past the cars using his bike to go through the gaps. Bobby had his car which meant he couldn't have possibly gotten through the gap making him reach Wilee in that amount of time. And second thing wrong with this is, even though Bobby knew where Wilee was taking the envelope too, he still didn't have any way to know the precise direction Wilee was going in to deliver the envelope. (00:11:50 - 00:13:30)
Continuity mistake: When Bobby catches up to Wilee, he ends up having to stop at a traffic light. The two cars in front of his car are a blue car and a silver car about to park onto a curb. Yet from a wide angle, the car parking on the curb is now black, and there are no blue cars in sight. (00:14:10)
Continuity mistake: As Bobby chases Wilee, they both go under a bridge and Bobby says "I'm chasing a bicycle." After this line, they drive past the exact same Mobil gas station three times. (00:14:40)
Revealing mistake: The passenger of a taxi opens the taxi door, which an officer on the bike then collides with. If you look at the passenger, he never takes a look behind him to see the officer, but still quickly moves back into the taxi as if he knew that the officer was about to hit the taxi door. (00:17:55)
Revealing mistake: When the officer on the bike chases Wilee, the door to a taxi opens and the officer collides with the door. You can see that the window had been removed from the door to make sure the actor doesn't get injured. It certainly wasn't rolled down because the frame isn't even there. (00:18:00)
Revealing mistake: After the officer collides with the taxi door, Wilee tries to think which route to take. The second one he thinks up is him ending up hitting a jogger and the jogger getting run over by a van. It's noticeable they used a dummy. Notice how the body flips over, completely unrealistically. (00:18:20)
Continuity mistake: A few seconds after Mr. Leung gives Nima a number card, he asks "This money is for a snakehead?" As he says this, his arm is resting freely. He doesn't move his arm in the following reverse angle, but his arm is suddenly resting on the chair when the camera cuts back to him. (00:39:55)
Continuity mistake: At the start of the scene where Wilee chases Manny, the wide shot shows them to be riding on the left side of the road. The shot cuts to a view of the ground where they are now riding on the right side of the road. (00:53:05)
Continuity mistake: When Wilee collides with the taxi, he is sent into the air. During the slow-mo shot, as he shoots to the right of screen, one arm is raised and one arm is lowered. The next shot however shows both arms raised in the air. (01:00:15)
Continuity mistake: Just after Bobby shouts "Close the doors!", an officer tells a mechanic named Angus to stop Vanessa. In one shot, Angus steps off the car ready to grab her, but in the next shot, Angus goes to step off the car a second time. (01:11:50)
Continuity mistake: When Wilee is getting away from bobby at the campus, the position of the sun changes between shots.
Chosen answer: I think that sound is the front wheel giving way. If you look closely, you can see that his front wheel is wobbling a little as he escapes. This may be why he ditches his bike and steals the cop's bike soon after.