we'll have some chase car(s) but we're mostly saying dont count on the cranks for bailing you out on the ride. if you break down you're on your own. if you aren't comfortable with that dont plan on riding.
plus once you hit clark street in chicago everything goes to hell pretty much and its every man for himself. traffic is crazy, some people will be splitting lanes and blasting, some people will be stopping for lights.
if you break down in chicago you will probably have to wait for everyone to get to the party place, make some calls, regroup, and come back out to get you... hopefully someone likes you enough to leave the party and do that.