The main forces driving automotive emission technology are, of course, the ever increasing stringent emissions regulations worldwide. These in turn are triggering a raft of innovation in developing fuel efficient engines such as diesel or lean burn gasoline engines with high demands in particulate emissions reduction and NOx reduction technology. Alternatives fuels are another viable way to reduce CO2. For this second part of our management briefing, we talked with executives of Aeristech, Zircotec and Federal-Mogul about trends in after-treatment, exhaust coatings and 'upstream' factors influencing emissions as part of a move towards higher energy ignition systems.