Sonari Glinton

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As car companies make strides toward expanding the reach of electric cars in the U.S., the same is happening in the world of two wheels.

Outside the U.S., motorcycles, mopeds and scooters are vital, affordable forms of transportation that alleviate congestion. They also run on fossil fuels, and many of the smaller motors are more polluting than regular cars.

California has the toughest air quality regulations of any state in the country. But they're not tough enough to satisfy a new state law that requires California to double the rate at which it cuts greenhouse gases.

So this month, the California Air Resources Board approved a plan it says is aimed at "decarbonizing" the state's economy.

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