These all-terrain attack vehicles are fast and very useful against infantry and can wipeout large numbers of Attack Cycles when used en masse. Its light armor makes it vulnerable to any explosive weapon. - Tiberian Dawn manual(src)
The Humvee is a lightly armored and armed vehicle, designed for scouting, transportation, and light fire support. Although ineffective against hard targets, the 7.62 mm M60 general purpose machine gun mounted on the roof provides a 360 degree area of fire, while the Humvee's speed allows it to quickly support advancing infantry squads, perform recon operations, and retreat.
The Humvee is the basic scout vehicle of GDI, designed to harass enemy infantry and recon the map, but despite being an utility vehicle, it cannot carry passengers. In its role it is equivalent to the Nod Buggy. Although four times as expensive as the basic Minigunner, the Humvee can cross Tiberium without losing health and can be repaired, making it a good candidate for hit and run attacks where Minigunners would wind up crushed.
Behind the scenes
In the German dub of the game, the Humvee was named "Wüstenjäger", which means desert hunter.
Photographic image from DOS manual
Model from Brady Games' strategy guide
Render from the French Géneration 4 game magazine CD