I have the LightinSight fresnel lens installed - it is a bit pricey, but with the money saved from not having to see a chiropractor, it has paid for itself!

South Carolina isn't very civilized (to judge by the conversation here), so unless I am two cars back, I use the lens to see the light. On occasion, I get close enough to look through the roof.
And here, there are enough Damned Yankees to make Coke either a Coke, or some other fizzy beverage. And Tea means SWEET Iced Tea - any other way, you gotta order it special. Oh, yeah, and grits...