Great, but what did it cost to extract hydrogen from that water, and how much does the electrolyzer cost?

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Before enacting the law, says Thomas McCool , head of financial research at the General Accounting Office, Congress did not calculate what it would cost to comply.

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By setting up a few simple Excel formulas (nothing more complicated than addition and division, you can see what they look like in this sample spreadsheet), you can not only track your maintenance data (what the mechanics did, when they did it, how much it cost, and what the mileage was at the time) but also see your average daily mileage during each period between servicings.

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That's what the Australian industrial group Pacific Dunlop did when it found the cost advantages that lured it to the Shenzhen Special Economic Zone (SEZ) outside Hong Kong fading.

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Pulgar-Vidal did not describe the extent of the contamination or estimate what it would cost to clean up.

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