I wanted to add... there wasn't anything special the dealer provided to sign/review to qualify for the extended emissions warranty when I bought the Insight (nor prior Hondas). All that was needed is to register and use the car in one of the listed states. Within one of the listed states, dealer service seems to automatically know and cover.for those wondering what this "longer warranty" talk is all about, follow link below - where we who live in the "b" states mentioned above have a longer year/miles coverage for "emissions-related" warranty items: http://owners.honda.com/documentum/warranty/partslist/2019_honda_insight_-_ewpl_apl08356_sis.pdf
So if you're in a listed state, the extended emissions warranty should be included even if you don't remember seeing or signing anything on this. But a watchout is that coverage won't apply for people who buy in a listed state (e.g. Pennsylvania), and then register/use in an unlisted state (e.g. Ohio).