I know that all the truck (GMC/ Chvey, Dodge, and Dodge) have to have particulant filters and oxidation canisters. I also know that trucks (International, Mack, Volvo, Peterbuilt, etc.) have to have them also. But heres my question, I just say a Volts Wagon commercial and it was about there TDI car. Do these cars have to have the same diesel emissions as the trucks do?