CV rides tend to be pretty spur of the moment......2-3 hours notice has been the current trend. I just don't know if it would truly be a Critical Vacuum anymore with things like adequate notice or proper organization.
While I am partly being a ******, there is also a certain truth to what I wrote. Being cooped up inside with no plans, surfing bikeforums and finding a ride to go on unexpectedly, then meeting random people and sparkin' an L, and bombing around a route that is determined on a whim by whomever happens to be leading, definitely gives CV a distinctive energy.
Give people notice, and they might start thinking about things like proper bike maintenance, clothing, nutrition, leg-shaving, personal hygeine, etc.
Andrew