Good morning.
The short answer to this question is that we do. We have a detailed database of both off-road equipment and on-road vehicles that we use to analyze the entire fleet of vehicles and equipment in Canada. We update that database annually.
We use it as a bottom-up tool to estimate the fuel combustion by different categories of vehicles based on years, on vintages. We acquire vehicle identification numbers from provinces and update them annually so that we have a good representation of what the Canadian fleet is made up of in regard to types of vehicles and how that evolves over time. That enables us to use more effectively the information on fuel consumption and attribute it to the different categories of vehicles.