what does the dash cam add to this? reporter: it gives us an indication of what happened in the early moments of this confrontation. while police will tell you there is no such thing as a routine traffic stop. officer slaying were pulled over walter scott for having a burned out brake light. the two cars pull into a park lot. sharing asks him for his license, registration and understand card. scott says he s buying the car from a neighbor monday. he don t yet have the paperwork. while sharing is running his driver s license scott tries to get out of the car to say something to sharing. slager yells at him to get back inside the vehicle. but then scott decide to bolt