The U.S. military believes that a Northeast Ohio company has discovered a cheap way to keep rust at bay. And so does a huge South Korean conglomerate called SK Holdings, which plans to invest $55 million in Tesla NanoCoatings over several years. Todd Hawkins obviously agrees with them. He founded the North Canton company, which has created what could be a significantly better way to protect structural steel from corrosion. Tesla NanoCoatings used carbon nanotubes — which are much stronger and lighter than steel — to develop a coating system that appears to be more durable and easier to apply than conventional coatings that use more zinc.