Invisibility was equivalent to safety for young Alex.

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The Transportation Safety Board is the Canadian equivalent of the United States' National Transportation Safety Board.

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Some other mass-market brands also have their equivalent, like the Toyota Safety Connect system.

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Mr Lo has a novel idea for future crises: creating a financial equivalent of the National Transport Safety Board, which investigates every civil-aviation crash in America.

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One is Cirrus, which makes simple little aeroplanes, aiming for the airborne equivalent of a modern car with the unique safety feature of a parachute for the entire aircraft.

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It should ultimately be capable of making ultralight cars at automotive scale and cost, halving steel cars' weight and fuel use, improving safety, costing no more per car and saving oil equivalent to finding a Saudi Arabia under Detroit.

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