14 Concepts That Failed Miserably or Were Simply Never Mass-Produced

14 Concepts That Failed Miserably or Were Simply Never Mass-Produced
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A nuclear-powered car? That’s what Ford promised in 1957. The Nucleon concept was all about long-distance travel, with a tiny reactor promising thousands of miles per charge. But compact nuclear tech never arrived. Then, safety fears and regulatory nightmares sealed its fate before it left the drawing board.