Have you seen a D2R bulb? Its the stock bulb for a USDM STi HID. The bulb has a shield to prevent light output in certain directions from the bulb. It is basically a piece of metal wrapped around the bulb.
edit: Why does everyone need to see a wall shot? Last I checked, one typically drives on flat surfaces avoiding objects perpendicular to the ground. Not flaming the previous poster as I see this question alot and find it odd.