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Q&A What changes would be needed to make explosive powered internal combustion engine common?

Is there a limit in physics/chemistry I need to change by inventing Unobtainium? Or is it just a matter of economy by making regular fuel much harder to extract, and chemical explosives much common...

2 answers  ·  posted 8y ago by Martheen‭  ·  last activity 8y ago by Martheen‭

Question earth-like earth engineering