Continuity mistake: While Bond is holding the rope attached to the Zeppelin a cop car crashes, its rear window rolled up. A shot later it's rolled down.

Revealing mistake: During the fire truck chase in San Francisco there's a long line of people watching the filming.
Chosen answer: The Mythbusters tested that very thing on their show. The result was that it was impossible to breathe in air from a leaking tire while underwater.
raywest ★