In my state back in the seventies we would often have to stop for a vehicle survey. They always asked "where ya coming from and where are you going?
It's none of the cops business where you are coming from or where you are going! When you are stopped, you need to provide a valid drivers license, vehicle registration and proof of insurance. That's all!
"Where are you coming from"? Back that way! "Where are you going"? Down that way! Are you investigating a crime, or just fishing, officer?