Restricting What’s Not Yet Regulated

Engineers are becoming like magicians – pulling improbable things out of their hats.

The difference is, it’s not a trick – and they haven’t got much choice.

Every car company has armies of engineers trying to figure out how to maintain the performance and power the market expects of new cars while also complying with the government’s demands – which are becoming harder and harder to comply with.

Some of these demands aren’t even official  . . . yet.

For example, this idea that carbon dioxide...