This just in from a story on CNN's website:
http://money.cnn.com/2007/02/09/news/companies/gm_robotad/?postversion=2007020915He said the revised ad will be posted again when changes are made, but it was not clear Friday if those changes would be in time for the new spot to air on the Grammy's on Sunday, which like the Super Bowl, will be broadcast on CBS. A different ad will be shown in its place if the revised ad is not ready.
Ugh.