Snip from NYT story by Paul Cullum:
When Steve McQueen died 25 years ago in Juarez, Mexico, he left behind two children, some 30 movies and a legacy as "The King of Cool" (the title of a documentary about him). He also left behind two custom-made trunks containing 16 leather-bound notebooks full of drawings, photographs from period magazines, and a detailed script continuity – a screenplay without dialogue – written in a kind of hyper-stylized poetry. These materials were his plans for "Yucatan," the vanity project he yearned, but failed, to make.
A heist film and adventure epic, it would have married the sprawling canvas of films like "The Great Escape" and "Papillon" with the chase-scene histrionics of "Bullitt" (transferred to motorcycles, McQueen's lifelong passion) along with some ancient history and visionary science thrown in for good measure.