🌐EnglishEnglishDeutschEspañolFrançaisEntityQ18196395· pop 8· linked from 16 articlesrolling coaldiesel engine modification to emit large amounts of dark exhaust fumesWikidata factsImageTractor Pull Bowling Green OH 2006.JPGvia Wikidata · CC0Available in 7 languagesEspañolFrançaisDeutschNorwegiansimpleUkrainianvia Wikidata sitelinks · CC0ConnectionsHuffPostEntityemission standardEntityCategoriesAir pollutionAutomotive terminologyCar crimeEnvironmental crimeEnvironmental skepticismExhaust systemsHazardous motor vehicle activitiesUnited States-centricVehicle modificationWaste of resources