Right.... in the event of you finding yourself in a bad horror movie, you know, the ones with the sudden fog appearing, you'll be able to see the monsters before they get you. Hmmmmm...that will work. Note tho' that when you run away you need a girl in a tight skirt and high heels so that you may save her when she falls. Heaving bosom helps as well (hers not yours).
I turned on the fogs on my BMW once a year or so just to check that the bulbs worked.