If you are felling trees in a remote wilderness and your truck breaks down, it can be life-threatening.
Today’s invention is an emergency vehicle designed to be formed from a small wooden platform and two (or more) chainsaws.
The saws are therefore designed to accommodate a steel band which fits over each set of teeth, transforming them into a passable caterpillar track.
They can then be clamped, using their integral fittings, onto any board (if necessary, one cut from a big tree) and the resulting vehicle used to get eg an injured person back to base safely, using the remote throttle cable controls shown.