Half Tank

This half tank could use and its four wheels and the two tracks on its sides. When it needs a high speed it lifts the tracks and moves very fast, on paved roads etc, but when it gets stuck in some heavy mud and four wheel drive is not enough it emerges its two tracks and can get out of some heavy swamps. And if the inflated rubber wheels get shot flat or burned down he can also use tracks - the wheels are not necessary when it moves on tracks. LINK