Let it be known that the “that’s not going to impact me” era in heavy-duty zero-emissions vehicle regulations is over. Even if you aren’t operating in California, a number of other states are adopting CARB Advanced Clean Fleet and Advanced Clean Truck regulations, and EPA’s Greenhouse Gas (GHG) 2027 regulation is right around the corner. Engine manufacturers and OEMs alike are preparing for it in their product offering. It was a big talking point at a recent Peterbilt dealer event held in early October in California.