As you all can see from my profile pic, I installed aftermarket pencil-beam driving lights behind the grill on my '17 Camaro. The reasoning is that I have aftermarket projector headlights, which have a very tight beam in themselves and leave the sides almost totally dark (as do the factory headlights).
Even in well-lit areas, this isn't a good thing, as things on the sides of the road aren't illuminated at all, in rural areas, it's even worse. So I found a really good set at Tractor Supply. The only "drawback was that the "kit" comes in 3 separate items. The first is the two lights themselves, then there is the wiring harness, and finally, a "Y" connector (the wiring harness is only set up for one light ... probably for something like a 30" light bar). All told, the 3 parts cost around $125.
I have installed after market 'fog' and 'driving' lights on nearly all my cars (mainly amber ones), as they dramatically improve lighting off to to the sides as well as during less than ideal weather. I also am VERY obsessive with PROPERLY AIMING them! These Tractor Supply lights have a very tight, focused beam and I deliberately aimed the lights off to the sides, so their beam pattern is at the outer edges of the headlight pattern, thereby lighting up the sides of the road. So not only do they "fill in the blank spots," they light up roadsigns exceptionally well. All WITHOUT blinding other drivers.
Here is a 20 minute video on installing the lights as well as a bit of driving on city and country roads: