Hey They actually used the image. I'm happily stunned.
This was a piece done for the Marketing of an episode called "Best Day Ever". Don't be confused when you see the episode. There is no submarine/bicycle in the episode.
I drew the rough sketch. Robert Ryan Cory did the masterful clean-up and filled in the interior of the submarine where I had left a couple nebulous pencil scratches. It was Teal Wang that did the color, Peter Bennett applied some shading..