during those times, a big push by the auto industry to convince california andand administration to make a deal. it takes a long time to design, produce, and build a new automobile, 3-5 years. not like building a small consumer good because the vehicles have 5000 pounds, they are very complicated. the auto companies want everybody to make a deal but the question is what california, and does the donald trump administration have incentive, they are very far apart now because they do not think california has the authority to set rules, but california says we want to keep racing standards by dramatic -- raising standards by dramatic amounts. host: what authorities allow individual states to make these fuel efficiency standards? it seems like the trump administration is challenging that. host: under the -- guest: under the clean air act, california have so much smog it address the issue before the clear act was signed by president in. -- president nixon. they needed a waiver on the epa to set their own rules and over the course of the last 40 years, they have gotten 100 waivers to do state sp