Concept art for unproduced Humongous and Hulabee games

Just stumbled upon this art gallery on the site of Humongous and Hulabee alumnus, Tom Witte. It has some interesting concept art for unproduced games from both companies.

It seems there were plans for a Backyard Sports kart racing game at some point. And Hulabee was going to make something featuring pirates and pilots. It's unclear if all of the unused concept art from their company was made for one game or several. Though I don't think the bananas and pepper shaker were meant for an adventure game, given that their description claims they were going to be trading resources, which is not a term you hear very often in this genre.