Partial Zero Emission Vehicles – PZEV – The temperature of the catalyst is a critical factor in the performance of your car. When it is cold, it is less efficient then when it is hot. Further down the line, with your exhaust, is more ceramic substrate catalysts that help further reduce hydrocarbon and NOx. The only downside to this is the highly expensive cost of the metals used to coat the catalysts, sometimes costing up to $1000/ounce.
Lou Ann Hammond is the CEO of Carlist and Driving the Nation. She is the co-host of Real Wheels Washington Post carchat every Friday morning and is the Automotive, energy correspondent for The John Batchelor Show and a Contributor to Automotive Electronics magazine headquartered in Korea. Hammond is a founding member of the Women's World Car of the Year #WWCOTY, and board member of the Women in Automotive.