* Different ways to define a "model": Is a simple trim level change (like a DeVille to a Fleetwood) a new model, or just a variation? What about facelifts or significant redesigns within a generation?
* Variations by market: Some models were only sold in specific regions.
* Inconsistent record-keeping: Record-keeping practices weren't standardized across Cadillac's long history.
While a precise count is impossible, it's safe to say the number is in the hundreds, considering the numerous nameplates (like Eldorado, Seville, DeVille, Fleetwood, Escalade, etc.), their variations across decades, and the different body styles offered (sedans, coupes, convertibles, SUVs).
