NPR aired a story on Morning Edition on June 9th about hypermiling.  I had saved the link to write about it later and when I told my girlfriend about it she said she had heard it that morning on the radio.  More and more people must be asking "What is hypermiling?" if NPR is covering the phenomenon now.

Here is a highlight from the article,

Adams' hypermilers group installed a miles-per-gallon meter in a reporter's car for a 10-mile test drive. Rather than the 8 miles per gallon the reporter had predicted, he averaged 21.1 mpg. Not only that, but there were periods of coasting with 111 mpg.

You can listen to the story by visiting NPR's website.