Trump’s New Auto Rollback Is an Economic Disaster
Efforts to rollback CAFE standard could eliminated jobs in auto industry and do not pass a reasonable cost-benefit analysis test. Basically investments automakers made into higher efficiency tech don't pay off, some auto workers get laid off, and consumer pay more a pump to operate newer vehicles.
Additionally what is not contemplated here is the strategy risk of legacy automakers not transitioning into the EV market. Balancing CAFE standards was one way automakers could hedge the risks of bringing EVs to market. CAFE standards imply an internal cross-subsidization from fuel hogs to fuel efficient vehicles. It's part of what make compliance EVs cost effective to make. Legacy automakers may become less motivated to develop critical EV capabilities in the short run and fail in the long run when EVs becomes the profit and growth engine of the industry.
Meanwhile this looks good for Tesla. Musk has complained that Tesla only gets fraction of the economic value that legacy makers get from CAFE credits. These credits have internally subsided fuel efficient vehicles. This in particular has made it harder for Tesla to make the economics of econo-sized cars work. That is, Tesla would need to compete with a subsidized vehicle that is only sold to enable the company to sell profitable trucks and SUVs. What happens when this is relaxed? Legacy automakers will make fewer fuel efficient vehicles. This means prices for environmentally sensible cars can go up. But it makes little difference to Tesla's costs. So on a comparative basis Tesla becomes more competitive in fuel efficient segments. Legacy ICE makers could exit these segments altogether allowing Tesla to dominate those segments. The OEMs will retreat into trucks and SUVs, but even there Tesla has a clear advantage supplying consumers with lower operating cost alternatives, plus all of the hedonic value of a fine electric drivetrain.
Net result, I think Tesla benefits from relaxing CAFE standards, while legacy automakers lose their strategic pathway into the EV age. Tesla could be positioned to dominate the future US auto market.