If you wish to play as the chainsaw instead of as the mutant, change this:
you’re dead. The wastelands claim another.
you’re idling. Roll to be picked up before you run out of fuel.
If you are hurt, you can regain d6 MEAT with a successful Loremaster roll.
With a succuss, you immediately begin to pilot that mutant.
Resource: Everything Is Alive interviewing Josh the Chainsaw.