if you're an automaker, why risk not following cleaner standards even if not legally obligated? the probability of the next administration enforcing stricter st

if you're an automaker, why risk not following cleaner standards even if not legally obligated? the probability of the next administration enforcing stricter standards is very high, so might as well get a head start rather than save a few $ today and be left unable to compete 4 years from now due to R&D + mfg stagnation. who actually sees a long term trend towards greater inefficiencies?