Algodoo

EXTREMELY tough. Very hard to take the tracks off, and is fast and mobile. Can climb 40 degree slopes, drive perfectly upside down, has working spring suspension, can carry huge loads, climb steps up to a metre high, and cross gaps almost as long as it. Great engine power for pushing. Can survive high falls easily. (up to 40m before suspension damage.)

Weaknesses:-

-Struggles on low friction slopes. (Steep ones)
-Driving over tall, thin spikes/sticks may cause the tracks to get stuck on the spikes.
-Has no aesthetics. Built purely to be a rough and effective tracked vehicle.