US emissions description is totally contentless now   The US section is total nihil It is nothing more than a circular selfreferencing system of cryptic abbreviations without absolutely any kind of numerical data to back it up I guess you do not understand Well based on the wikipedia info a US partial zero emissions vehicle could either be a bicycle where the only emission is the cyclists fart to be rude or a modified Hummer H SUV having an  bhp Kenworth truck engine There is no numerical info on the page to let us decide which is the case  Any person could create a system of circularly selfreferencing acronyms and abbreviations for emissions categories out of thin air Yet it would still be zero information content So either delete the US emissions section or add the numerical data how many grams of CO NOx SOx unburnt fuel particle charcoal matter are emitted per distance travelled to back up those cryptic PZEV and alike codes with verifieable information  Look at the EuroX standard descriptions Each one is just a single sentence and it tells us the truth frankly Weight and numbers nothing else matters Acronyms are PR bullshit and do not belong to an ecyclopaedia  It is a shame US people do not dare to face the polluting nature of their monster cars and try to hide the sad mpg reality behind cryptic PZEV and similar abbreviations In Europe mpg is reality now  Regards Tamas Feher from Hungary etomcatfreemailhu