<prompt> Translate the following text to EnglishKwa mfano, gari jipya leo ni zaidi ya 90 safi kuliko ilivyokuwa kabla ya sheria za shirikisho zinazopunguza uzalishaji wa CO2, NOx na misombo ya kikaboni inayotembea - na zinakabiliwa na kupunguzwa zaidi kuanzia 2004, kama vile malori mazito mnamo 2007.  <response>: For example, a new car today is more than 90 percent cleaner than it was before federal laws limiting emissions of CO, NOx and volatile organic compounds - and they are subject to further reductions starting in 2004, as are heavy duty trucks in 2007. 