Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Corporate average fuel economy:

This text has been unreferenced on Wikipedia for a very long time. If you can't find a source, be bold and remove it!

"

Rather than mandating fuel economy increases, Charles Krauthammer advocated using a significant increase in gasoline taxes that would be revenue-neutral for the government.[3] CAFE advocates assert that most of the gains in fuel economy over the past 30 years can be attributed to the standard itself.[citation needed]