Those Dadblamed Trees

A man named Ole was driving home after a heavy night of drinking-
He turns a corner and much to his horror he sees a tree smack dab in the middle of the road.
He swerves to avoid it and almost too late realizes there's another tree directly in his path!.
He swerves again and discovers that his ride home has turned into a slalom course, causing him to veer from side-to-side to avoid all the trees.
Moments later he hears the police siren so he stops the car.
The officer approaches Ole's car and asks him what on earth he is doing.
Ole tells him his story about the trees in the road when the officer stops him in mid-sentence and says"Fer Pete's sakes Ole,that's yer air freshner!"