The next installment in NPR's Backseat Book Club heads back to where this all started: Diary of a Wimpy Kid, by Jeff Kinney. It was our 2009 interview with Kinney that sparked the idea for a special book club dedicated to kids. On the day before Kinney arrived at our studios, we asked our youngest listeners to send us the questions they would put to the author of the blockbuster series. We were floored by the response. An avalanche of emails hit our inbox from kids all over the country.