Mark hasn't given up on Xenozoic Tales (the original name for Cadillacs and Dinosaurs) but is waiting for the right time to return to the characters.
This animated series was a fun realization of the black and white comics, now available from Dark Horse Comics as reprints, and features the world's most influential creatures, dinosaurs. Beneath it's action-adventure surface lies a message about the cataclysmic effects humans have on the Earth's environment and how future generations reform societies in the wake of the disaster. Strange and unique sci-fi if I say so myself.
Unlike the Dinosaurs, Mark Schultz and Xenozoic Tales aren't extinct.