Patent ID: 7575075

Claim:
A vehicle comprising: a housing; a platform mounted on top of the housing, the platform having a right and left side and a central axis, the platform being pivotally mounted to the housing along the axis and pivotally movable between a first position wherein the right side of the platform is below the left side of the platform and a second position wherein the left side of the platform is below the right side of the platform; a pair of parallel right and left tracks mounted to the housing below the platform, the right track being coupled to a right track drive and the left track being coupled to a left track drive, the right and left track drives being operatively coupled to the platform such that when the platform is pivoted towards its first position, the left track is driven faster and the right track is driven slower, and when the platform is pivoted towards its second position, the right track is driven faster and the left track is driven slower, the platform being biased towards a central position wherein the left and right drives operate at the same speed.