The two main characters are mechanic Jack Tenrec and scientist (and love interest) Hannah Dundee. Tenrec operates a garage in which he restores cars, particularly Cadillacs. Given that the post-apocalyptic world no longer possesses the ability to refine oil, Jack modifies his cars to run on dinosaur guano. These cars, of course, are frequently chased by rampaging dinosaurs in pulp style action-adventure stories. Publication began in 1986 with a story in the comic anthology Death Rattle. This debut was shortly followed by Xenozoic Tales #1 in February 1987. The comic series ran for 14 issues from several publishers including Kitchen Sink Press, Marvel Comics and Dark Horse Publications.
The series proved moderately successful and under the title “Cadillacs and Dinosaurs”
spawned an animated TV series on the CBS Network, arcade games from Capcom and Sega, action figures, trading cards, candy bars, and a role-playing game. The title "Cadillacs and Dinosaurs" and likenesses of classic Cadillac automobiles were used with the consent of General Motors, who holds the phrase "Cadillacs and Dinosaurs" as a trademark and has licensed it for the comic, the videogame and the animated series.