Goodyear and Gordon say that mass motoring represents one of the biggest public health crises that the world has ever seen... Environmental scientists contend that tire dust and tire fragments are one of the largest sources of plastic particle pollutants in ocean water. Vehicle brake wear contributes high levels of magnetite to the environment that has been linked to the development of Alzheimer’s, a leading cause of death among the elderly."

https://www.styleweekly.com/unsafe-at-any-speed/