"Less cars on the road means productivity and jobs growth, as it allows for the more efficient movement of goods and services and encourages greater urban population density."

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If the moon and earth were not retained in their orbits by their animal force or some other equivalent, the earth would mount to the moon by a fifty-fourth part of their distance, and the moon fall towards the earth through the other fifty-three parts, and they would there meet, assuming, however, that the substance of both is of the same density.

— Johannes Kepler