We have had demos of the robot at various DuPont sponsored events, such as Take Your Sons and Daughters to Work day. This exposes not just the young students (who are really too young for FRC, although we do have FLL and FTC info there) but their employee parents and other employees who pass by. We try and have the demos in the site cafeteria to get the most audience.
This of course is at our local DuPont sites - I'm sure teams who are sponsored at other DuPont sites across the country do something similar.
We have also submitted news event to the company's Engineering Newsletter (which reaches only that department) and, when we have some special news such as winning a regional or a Championship award, we try and get it on the Company wide news.
For an example, see this (from the DuPont public website
http://www2.dupont.com/Media_Center/...20080619a.html