Lemmy Lemmy:
If they've got the car model and first letter of the plate, they've got him, no matter where he parks it.
^^
It's not like there are thousands of Silver Pontiac Waves in Edmonton. 50 or 60 tops.
So all they have to do is check out where each one was that morning, starting with those that have a newer plate starting with "B".
And since Pontiac died some time ago, and 7 digit plates are relatively new, odds are it was purchased as a used car relatively recently and that there is only one matching that criteria in the entire city.