For purposes of this article, the following terms shall have the following meanings:

1. "motor vehicle" shall mean a passenger vehicle, light-duty truck with a gross vehicle weight of eighty-five hundred pounds or less, or any other vehicle determined by the commissioner to be a vehicle whose primary use is noncommercial personal transportation and which is manufactured for the model year two thousand ten or subsequent model year; and

2. "motor vehicle global warming gases" or "global warming gases" shall mean carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride.