Gearbox damage

[tonupboy69]

Since it is possible to modify car state and refering to your example for engine damage:

function script.update(dt)
  if car.waterTemperature > 95 then
    ac.accessCarPhysics().engineLifeLeft = 0
  end
end

What should it say for gearbox damage and where is a list for the modifiable car state or rather their corresponding codes in LUA?