OK, now I don't feel so bad. Check out the second paragraph, last sentence of the GM Fast Lane blog post that's linked below. When your VP of Communications doesn't know the proper plural form for the name of a new model, it indicates a potential problem. It's time that the auto industry agrees to no more car names that leave people fumbling when trying to speak of two or more vehicles, unless said vehicle is a one-off. Where's Bill Maher and one of his New Rules when you really need them?