A motor and an engine – what's the difference?

Sounds like a trick question, right? Some answers you might hear include- 'they're the same thing,' or 'its whatever makes a car go.' Not so fast! Put simply, a motor runs on electricity, while an engine runs on combustion.

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As urbanization accelerates, cities are at the forefront of changes in energy, mobility and consumption. Across regions, cities are experimenting with ways to improve air quality, reduce congestion and provide clean, reliable and affordable energy to their growing populations.

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Among the many things that set hybrid and electric cars apart from conventional fuel sippers is their silence; aside from some eerie electronic whirring, many models glide stealthily down the street. Not for long, however. After years of delays, the U.S. Department of Transportation has finalized rules that require electric vehicles and hybrids to emit sounds to alert pedestrians of their approach.

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Improvements in traffic flow and fuel consumption are boosted when even a few autonomous vehicles are immersed in bulk traffic, according to research by a Rutgers University-Camden scholar, Benedetto Piccoli, and a team of researchers who recently presented their findings to policymakers in Washington, D.C.

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The budding trend toward battery-powered cars is unfolding as new mainstream models from General Motors, Nissan and others proliferate rapidly in the U.S. market, introducing an alternative mode of vehicle operation, which drivers accustomed to gas pedal and brake may find unfamiliar.

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