Cougar
From Halopedia, the Halo wiki
The Cougar is a lightweight, fast and highly flexible armored vehicle to be used in the upcoming game Halo Wars by UNSC forces. Although heavy armor fire will blow the Cougar away quite easily, this vehicle is highly effective holding off enemy armored vehicles while the slower armored ones are on transit. The Cougar had gained infamy in several urban tactical situations prior to the deployments in the war with the Covenant. [1]
It appears as a somewhat standard armored fighting vehicle with a pair of wheels up front and four in the rear. It bears a small turret that mounts two autocannons and a wind screen on its foward body with two side windows for maximum visibility for the driver.