Who’s Who?

To be precise - it's the driver who is being sought. The Driver may, or not, be a Canadian. Last time I saw a Quebec licensed mini-van in Zihua I stuck up a conversation with the owner - a Mexican (from DF) who'd been living in Quebec for a few years and made the long journey south in his vehicle, and was in Zihua on vacation. People do this.

True. I think that “Looking for Owner of a Quebec-plated Vehicle” would be more accurate. If you find the owner, you would likely be able to determine the driver.

I know that it is not legal for a Mexican citizen or a permanent resident to drive a foreign-plated vehicle. I also know that it happens. And I know the consequences can be serious, including confiscation of the vehicle.

Mexican authorities typically will confiscate and impound any foreign plated vehicle that is found being driven by a Mexican national, unless they can provide proof of the exceptions above.

I know this by indirect experience. When I had temporary residency I had a foreign-plated vehicle. A person agreed to drive my vehicle to a shop to have some paint work done. They were stopped and I almost lost my vehicle.

Now imagine you were driving a vehicle illegally. You see that you bumped someone, injured them, but did not kill them. You understand that the vehicle of your employer or friend will likely be confiscated if you remain at the scene. Lots of people, regardless of nationality, might drive away, hoping for the best.

Given that there is a witness and photographs, “the best” for the driver might not happen.