To unearth that was very complex. We put in place a new testing program and started to see these odd results. We amassed a body of evidence, including the information that was coming from the U.S. EPA and CARB as well. We had evidence to support this, working in collaboration with our U.S. colleagues. That information took time because we actually had to put in place new testing provisions.
The other important consideration that differs between Canada and the United States is that the majority of our vehicles are sold concurrently in the United States, and to ease the administrative burden of our industry, we allow them to use the certificates that are issued by the United States. The United States has a body of evidence that we don't have. This allows them to move more quickly in some elements. We relied on that, developed our case, and transferred it over to our colleagues in enforcement.
I'll turn it back to you.