Character mistake: When Charlie is calling out the brick count to Napster from the subway, he describes it as being "13 across, 4 high, 4 deep". The bricks appear to be 2 deep in the safe (13x4x2), so he could just be lumping two shelves together, which works (13x4x4 = 13x4x2x2). The problem is that when the camera pans down there are 3 shelves in the safe. This means that there are more than the 208 bricks that Napster announces. (01:33:40)
Character mistake: When the helicopter's pilot says "Zorro-Mike" it should be "Zulu-Mike" (01:20:15)
Answer: The Mini Cooper for the movie was also made as an electric car for the chase scenes in the tunnel because gas-powered cars were not allowed to be used in the tunnels. I heard that from the director's cut.