[This is overdue. I'm sorry for taking this long to relay the following comments to the site...]
jim white said:
It looks like a major demonstration is planned for September 15 (I know, another Saturday!). Do you have any links for people to get in touch with groups that may be helping various cities to organize group transportation and the like? If not, I'll see what I can find tomorrow.
The September 15 demonstration is sponsored by both ImpeachBush.org and ANSWER. There is a listing of charter buses on the ANSWER site: http://answer.pephost.org/site/PageServer?pagename=S15_transportation.
MoveOn.org is also organizing vigils on August 28 to prepare people for the Petraeus-Crocker report. To find an event in your area check out http://pol.moveon.org/event/events/index.html?action_id=92.