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[–] 25652721? 0 points 1 point (+1|-0) ago 

Those things, I believe, do exist but we aren't allowed to have them. Only the very rich and powerful. I hope this changes in the near future.

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[–] 25652824? 0 points 1 point (+1|-0) ago 

All of that stuff probably relies on free energy and that would upset the oil people too much. Not to mention the governments that rake in tax money from the sale of fuel..