ZombieMod takes a unique approach on the Zombie Apocalypse by putting it in the perspective of a military commander, not a survivor. Since it is 2 years after the first infections, resistance on the east coast is organized, resulting in battles rather than small groups fighting for survival.
A demonstration showing the Police Squad and the Squad Car and how they work ingame. You can also see the Humvee that can be garrisoned later on in the clip, but normal squads cannot use it (more on that later ;))
Map is La Vierre (2) by Spankz0r - I figure I've used it so much he deserves credit :P