061019 404 The Iowa Department of Transportation is awarding 4.6 million dollars to help transit fleets replace buses. The money comes from Volkswagen as part of its settlement for 2015 Clean Air Act violations. The largest amount of money will partially fund 107 new school buses across the state. Half of these buses will use a propane engine. Zac Bitting (BIT-ting rhymes with hitting) is the DOT’s grant manager and says propane fuel generates less pollution than diesel. 0610bitting1.wav :12