Last Summer I did four illustrations based on (swiped from) vintage clip art for promotional billboards for KFI AM 640. My brother Neil art directed and wrote the billboard copy. The art was completely digital -- and I was drawing somewhat out of my comfort zone -- but I managed to get a fairly authentic retro brush look anyway. Daily Billboard recently posted a photo of one of the billboards "in action" on Sunset Blvd (thanks, Daily Billboard!).