For the rig Sterling Vaughn oversees, regulations and the company's goals call for zero pollution.

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Shiva Vencat, chief executive of Zero Pollution Motors in New Paltz, N.

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"As a public company, stock is our currency, " explains the company's chief, Steven Schneider, who took the top job when Zap, which stands for "zero air pollution, " bought Schneider's auto repossession business in 2002.

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"We allow private actors--your company, me, my family--to put pollution into the atmosphere in unlimited amounts at zero cost, " he said.

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The letter, organized by Beyond Zero Emissions, comes as a response to the failure of the much-compromised Carbon Pollution Reduction Scheme (CPRS), which was pilloried as a giveaway to fossil fuel industries and ineffective for driving clean energy deployment.

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