They had some really cool rigged cars and things that were different that they would tow behind the camera car that were actually on these trailers that manipulated side to side and stuff like they were getting hit, and actually put the actor right in the middle of the chase.
It would be wrong to say that the city of Berlin is not regulated. What I think is more interesting is to what extent a city creates a sort of safe haven for its users, so that people feel confident that the city works on their behalf.