The series may have only lasted 14 issues and ended mid-story, but it enjoyed a surprising amount of marketing success for an alternative comic. C&D was the catchier title so it's the one that stuck.
Technically, 'Cadillacs & Dinosaurs' (abbreviated hereafter as 'C&D') is the nickname for a short-lived comics series titled 'Xenozoic Tales.' It was the brainchild of Mark Schultz, who both wrote and provided most of the artwork for each of the series' 14 issues. But if it sounds familiar, that's because it's the setting of a comic book series you might have heard of: Cadillacs & Dinosaurs.
Chances are you've never heard of the Xenozoic, that as-yet-to-come geologic era when every creature that ever existed once again roams the Earth, and when what's left of mankind cruises the countryside in retrofitted 1940s and '50s Cadillacs.