Woman driver and the trees

A woman driver is heading down the expressway, when all of a sudden the woman sees a tree to her left, a tree to her right, and a tree directly in front of her, so she swerves and hits a guardrail.

Later, a cop arrives and ask her what happened, to which she replied,”I saw a tree to my left, a tree to my right, and a tree directly in front of me!”

The cop says, “Ma’am, there ARE trees on both sides of the road, but the one you saw directly in front of you was your air freshener.”