The different types of lights put into the scene all added a different light source and feel than each other; the omni glows in all directions, the spot in one cone, the skylight changing the light in the entirety of the scene, and the direct which lights up a cylinder in one direction. Each one had their own settings, and so affected the scene differently, which all came together to help give the illusion of a day-long drive through the country. My only challenge in changing the settings was the fact that it was quite tedious and boring, but that's it.
By linking the headlight lights to the headlight objects, I was able to ensure that the lights would follow the car and be shine from the correct position. The align tool helped me get the lights to the exact centers of the objects.
By making the omni and direct lights orbit around the plane, I simulated the passage of time, and the moon orbiting around the earth while the earth orbits around the sun. This effect made the car look like it takes all day to drive around the country side, and to further that look, over the course of the animation, the colours and brightness of the lights were altered.
Enabling shadows made the scene look even more like it was going through dawn, day, dusk, and night. If not for the shadows, the scene's minimal realness would've further deteriorated, and the lights would just be colours projected on to objects. It lets the light function realistically, which adds to the realism of the scene.
The cameras in my scene were used to project two different perspectives of the scene and its lighting. One point-of-view emulated the view from a real car, and the other a view from outside of it. By linking the cameras to the car, I was able to follow the car without problems.