Post Malone must be creatively restless. The rapper/pop star/country star is venturing into the world of comic books. The singer has teamed up with Vault Comics for “Big Rig,” a graphic novel described as “Evil Dead” meets “Mad Max: Fury Road.” Not only is he the brains behind the graphic novel, but the comic is set to be adapted into a feature film. The book will be published later this year, but the first chapter will be made available exclusively at local comic shops on Free Comic Book Day (May 3). But why wait? You can see several sample pages of the book here.