Revealing mistake: When Jack drives the bus down the alley, it knocks a series of A/C units off a building. The last one comes open and there is obviously nothing inside. (01:12:35)
Revealing mistake: After the hostages are released and Eddie runs back to the bus, Jack opens the front doors to let him back on. Before he touches the door handle, it is pointed all the way towards the back of the bus. With the handle in this position, both the front and rear doors of the bus would be open already.