By dint of some heavy processing, the world into turned into a noir film.
The world is monochrome, all cars are transformed into things with running boards, everyone is in 1930's gear and smoking heavily...
You are Philip Marlowe, even a simple trip to the corner shop involves a body and suspects,
none of whom are telling the truth.
Except if you're in South London, in which case those are already provided and you can just turn the thing off and save the batteries.