Because of a 'grandfather clause', the strict emission standards only apply to new cars.
(..) Ser Davos and I will ride for White Harbor tomorrow, then sail for Dragonstone. Have you forgotten what happened to our grandfather? The Mad King invited him to King's Landing - and roasted him alive. - I know that. She is here to reclaim the Iron (..)2017 TvShow: Game of Thrones Title: Stormborn Season: 7 Episode 2