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Could using the world's strongest substance be the answer to wear and tear on Essex roads? Although more expensive than standard hot rolled asphalt, tests have shown that graphene is more resistant to weather and traffic. ÃÛÑ¿´«Ã½ reporter Janine Machin has been finding out more... Picture credit: Janine Machin/ÃÛÑ¿´«Ã½.