Trooper Clay Core tells the Eugene Register-Guard that the pot was "pelting my car" as the chase continued north Monday night along Interstate 5 toward Eugene.
Eventually, the car stopped, and officers detained two Washington state men on several charges, including tampering with evidence. Core says jettisoning the pot was an unsuccessful attempt to get rid of evidence.
Between the car and what officers found along the interstate, Core says, five pounds of pot was retrieved.
And, Core says, officers worked Monday night and Tuesday morning to make sure they picked up all of it.