It's now out and my review copy has arrived; the authors are Yoram Bauman and illustrator Grady Klein. It is the next step in economics education. You can buy it here.
Bauman is not just a good economist he is a very good economist, with an insightful philosophical bent and the natural inclinations of an educator, in the best sense of that term. His website is www.standupeconomist.com.
Here is Yoram (and others, including Paul Krugman) on PBS, discussing economics and humor.