> When examined side by side with European emissions standards, the economics of CAFE become more transparent. EU are relatively straight forward by comparison.

> When examined side by side with European emissions standards, the economics of CAFE become more transparent. EU are relatively straight forward by comparison. Tailpipe CO2 emissions are measured and a de facto consumption tax is levied based on a vehicle’s output. One downside of this is that it encourages diesel. While diesel has a less CO2 emissions, it tends to have a lot of other very harmful emissions. These can be regulated but companies do cheat (see VW).