How not to run onto a tree

A state trooper pulls a car over on a lonely back road and approaches the blonde lady driver. "Ma'am, is there a reason that you're weaving all over the road?" The woman replied, "Oh officer, thank goodness you're here!! I almost had an accident! I looked up and there was a tree right in front of me. I swerved to the left and there was another tree in front of me. I swerved to the right and there was another tree in front of me!" Reaching through the side window to the rear view mirror,the officer replied, "Ma'am...that's your air freshener."