ACROFORCE

 It gets the name ACROFORCE from the fact it rsembles (and technically works like) Acrobot II from the Mindstorms RIS 1.0 sets and that it uses those large Exo-Force tank wheels. Powered by 2 XL PF motors at the rear providing 2 wheel drive. With another two XL PF motors, this can be made four wheel drive which is more effective in snow (as opposed to 2WD seen on the snow in the video). It also features the PF lights, and because of those large wheels can run right-side up or upside-down. The front wheels aren't the most secure as you'll notice they twist and flex a lot when turning.

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