Which 2000's car had the least sales in the United States?

I was wondering what car had the least amount of sales in the US over the course of the entire car's history. For example, the Cadillac XLR, from 2003-2009, had a total of 15260 sales (Wikipedia). Was there any car in the 2000's that had less sales than that throughout the enitre cars history, and not in just one year. Thanks!