Canada-based Gratomic Inc. has signed a letter of collaboration with Perpetuus Carbon Technologies Limited to develop and market graphite-derived graphenes and graphene hybrids for tyre elastomers. According Gratomic, a number of end-user customers (which in this case means tyre manufacturers) are already road-testing tyres based on this material. Bicycle tyres, motorbike tyres, military tyres and race tyres are said to be key areas of interest.