That will be interesting. Trucks will derate when DEF goes empty and then derate again after empty for a while. All that means is your goods are going to be sitting on the side of the road with a truck that will only idle. Dumb idea to make a shortage of the fluids and fuel that move the world. Gasoline, who cares most of you have worked from home for the last year so it's not that important and can be held for essential workers, which they know who you are now. Now if all the DEF trucks would be stopped maybe we would have a little power to repeal that electronic log, wishful thinking. Hope it will keep me on a time sheet for 7-10 more years, I can live with that.