Fluke incident as a plank of wood is sent hurling through the driver's windscreen while filming from a camera phone.

The driver here, Wendy Cobb, has gotten a lot of criticism for filming herself driving with her mobile phone.

But look at the video and her behavior has nothing to do with the accident.

A trailer rolling ahead apparently strikes a 2x4 piece of wood lying on the road and sends the debris hurling right through Cobb's windscreen.

Luckily, Cobb was not hurt at all in the incident (which could have been serious if not fatal).

The video should serve as a reminder of how dangerous debris lying on the road can be.