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justinian on 28 November 2012
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sethnintendo said:
ECM said:


 (Pro-tip: cars aren't lighter and not made of steel because it would *kill* people in accidents, therefore making cars super fuel efficient is impossible on *physics*--it's not a lack of will, but a lack of a death wish that prevents this from happening.)

I don't understand your argument here.  What are you trying to say negatively about the article in the car section?  You know carbon fiber is stronger than steel while being lighter?  Sure it might cost more but I don't really get what you are trying to state?  We could make the cars out of wood pulp extract which is apparently are stronger than steel and carbon fiber.

Carbon fire is stronger than steel in tensile strength but steel has stronger compressible strength.

As for carbon fibre being used in "unsinkable ships" and "unbreakable" body armour (in a military sense) is rather wishful. The same technology that creates these materials will also create technologies to counter them.

Also the fatigue (life of carbon materials) is totally ignored when it comes to carbon ships. The cost of such a ship would be "bigger than the US economy" for the grade of composite required.