This isn't my personal video, but i'm well familar with the route filmed. The nickname of the Afghan saluting the truck at the beginning is "Rambo." This Afghan lost his family to the Taliban and volunteered many days working for Coalition forces until eventually he was hired on.
This video is spot on for medium density Afghan traffic. If you were to actually reach the center of Kabul or Jalalabad the traffic would be much more chaotic. This video depicts a section of road heading away from Kabul (Afghan capital) towards Jalalabad. You'd actually have to drive about another 2:45 to 3:15 hours to reach Jalalabad. The route would include some drastic changes in elevation and driving alongside the edge of a few mountains.
I'm planning on going back to the middle east for a tour and have been searching YouTube for some good videos to jog my memory.
Finally, here's some good representation of high-density traffic conditions for Aghanistan
Here's what it looks like driving through the mountains between Kabul and Jalalabad. When I first started driving this route there were no guard rails.