Those look like city transit buses. They appear to have route numnbers on the front.
indeed, looks like a bunch of busses. there are landmarks that could be identified. one bus has a destination/identification on its front banner that I wasn’t able to make out, but would be unlikely at all if it was some clandestine attempt to bus in thousands of doppelgängers. there is a street sign that could be identified with the right skills and software, neither of which I possess.
but this certainly isn’t evidence of anything.