Premise:
"Another obvious bonus, although impossible to over-emphasize, is the absence of cars, the simple joy of wandering around a town relieved of traffic and pollution, of standing on a little humpback pedestrian bridge far from the Grand Canal and hearing only the water lapping against the moss-covered walls, or the occasional swish of a sleek gondola that appears out of nowhere." Based on this premise, is the hypothesis "There are no cars within 15 miles of the city." true?
it is not possible to tell