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So... these went out of use, pretty much.
But was it a right decision? If we used modern, lighter materials, could we make them smaller? Small enough for them to have length less than 8 meters and able to carry average family?
Think about the possibilities. They are quite fast, we can make them very safe (yea, I know about Hindenburg, but it happened literally nearly a century ago) and most importantly, they don't take the streets, so you get no traffic jams.
