The first is of these 'gray suited' people you've been hearing about which are apparently "computer virus agents" (possibly this 'Lock' character) whilst the second is a 'mobile billboard' promoting "Burlyman" used in the car chase scenes.
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Guerilla Films has posted pictures of a strange looking car for Matrix 2 and 3. Although it didn't appear in either film, we're still wondering where it came from and what it's for.
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