Here's why it's complicated:
* Sales fluctuate: Car sales change year to year based on popularity, new models, and economic factors.
* Defining "American": What exactly constitutes an "American" car? Does it have to be entirely made in the US, or is it enough to be manufactured by an American company?
* Categories: Do we consider overall sales of all models by a brand, or just a specific model?
To find the answer you're looking for, you need to be more specific:
* What year are you interested in?
* What definition of "American" are you using?
* Are you interested in a specific model or a brand's overall sales?
Once you provide these details, I can help you find the answer!