Ruwaa-pattern Shadow
From Halopedia, the Halo wiki
Shadow
http://www.yesalbum.com/v001/thepretenders22/shadow.jpg
Summary
Shadows are the Covenant's main mode of moving large numbers of troops around on land. They can hold a driver, a gunner, and up to eight occupants, depending on species of Covenant. They're outfitted to carry Elites, Brutes, Grunts, and Jackals. They're equipped with a Plasma Cannon, but the main purpose is to deploy infantry.