As well as carrying large items, they point out, airships are ideal for transporting light but bulky cargo such as flowers.

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For normal everyday driving with typical speed limits and light passenger and cargo loads, the mid-30s recommendation is a good one.

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But the crash of a Turkish Airlines' DC-10 10 minutes after take-off from Paris in March 1974 put the cargo door problems in a whole new light.

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The A400M fuselage has been designed with a spacious cabin, making it suitable for the transport of bulky cargo like helicopters, heavy vehicles, missile batteries and light vehicles placed side by side.

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Ram's heavy duty 2500 and 3500 models come with a rear-facing camera built into the center-mounted brake light behind the cab that can beam images of a trailer or the cargo in the bed into the truck's dashboard screen.

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Chrysler's PT Cruiser, a pip-squeak of a car that would have trouble hauling a rowboat, is classified as a light truck under the rules because the back seat folds flat to better carry cargo.

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The light trucks coming to market like the next-generation Chevrolet Silverado pickup and Ford Transit cargo van feature loads of fuel-saving technologies, proving you can have the space and capability you need and still get decent gas mileage.

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