What are the cops up to at the Black Spur?

Ok... So we got pulled over twice...
Well the first time we had already stopped when a cop breathalised us, checked our licenses and licence plates...
The thing that I am wondering about is... He wrote all the details (licences, names, and license plates) down in a list...
The second time we got flagged down at Marysville, they did the same thing... wrote it down on a list..
What is this list, why are they writing it down, what are they planning to do with it?
Isnt someone on this forum a police officer? Perhaps they could shed some light on this....
It just seems strange... I felt a bit violated... When we asked him what the list was for he changed the subject...
Well the first time we had already stopped when a cop breathalised us, checked our licenses and licence plates...
The thing that I am wondering about is... He wrote all the details (licences, names, and license plates) down in a list...
The second time we got flagged down at Marysville, they did the same thing... wrote it down on a list..
What is this list, why are they writing it down, what are they planning to do with it?
Isnt someone on this forum a police officer? Perhaps they could shed some light on this....
It just seems strange... I felt a bit violated... When we asked him what the list was for he changed the subject...