I'm not aware of direct work to create a working group. However, there are a number of measures being considered under the heavy-duty regulations to look at ways to decarbonize, as well as working with other departments to see what combination of measures will accomplish this. There are some programs that have been put in place by provinces looking at retrofitting the existing fleet, for example energy-saving devices like skirts on trucks, deflectors and tires. Those are the main measures that improved the efficiency of the current fleet.
On October 26th, 2020. See this statement in context.