The system comprises a hybrid system of hydrocarbon trapping material and {HEAD ~ palladium} based {TAIL ~ three way catalyst material}, the hydrocarbon trapping material being capable of adsorbing hydrocarbons present in said internal combustion exhaust gases and substantially maintaining adsorbance of the adsorbed hydrocarbons until after the palladium based three way catalyst material reaches a temperature at which it is capable of oxidizing the hydrocarbons 
based
The system comprises a hybrid system of hydrocarbon trapping material and { HEAD ~ palladium } based { TAIL ~ three way catalyst material } , the hydrocarbon trapping material being capable of adsorbing hydrocarbons present in said internal combustion exhaust gases and substantially maintaining adsorbance of the adsorbed hydrocarbons until after the palladium based three way catalyst material reaches a temperature at which it is capable of oxidizing the hydrocarbons
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