build your own Second World War tank

1 Construct guide rail for the track from ultra high molecular weight polyethylene.

2 Use polycarbonate for the sprocket to transmit torque to the track chain.

3 Fix chain tension by using a mallet to slide each idler bearing block toward the rear.

4 Wire two 12V mobility scooter sealed-lead acid batteries to generate a 24V base voltage.

OR

1 Ask Mr Wadsworth to cover your mobility scooter in cardboard boxes.

Add a turret and metal pipe as cannon.