Dr. Andy Walker is Johnson Matthey’s Technical Marketing Director. Within this role he analyses and assesses the regulatory, market and technology drivers for the clean energy transition. As part of this, he looks at the implications of the transition across the transport, chemical, industrial, heating and power sectors, including the way it will drive the use of clean hydrogen as a key enabler. One of his main focuses is the evolution of the automotive powertrain towards electrification, covering the future roles of internal combustion engines and battery and fuel cell electric vehicles. Andy is the author/co-author of over 80 publications, and in 2011 he was elected SAE Fellow.