This week on Hemmings Motor News Radio, we feature a conversation with Hemmings Associate Editor Jeff Koch and Senior Editor Matt Litwin, and the topic this week is "Die-cast Cars of the 60's". Jim Donnelly, Senior Editor from Hemmings Motor News, also joins us with a history lesson about Albert Champion, the inventor of the spark plug. Give us a listen here on Hemmings Motor News Radio and email us at radio@hemmings.com.