Discussion: rental car sharing in Manchester for Boulder Dash

Anyone flying into/out-of Manchester for the Boulder Dash interested in sharing a rental car? I have one reserved. I'm staying through Monday evening but can easily go back to the airport Sun (or Mon) to drop-off. I arrive late Fri evening (11 PM). I'm planning to camp at the meet site, but again, its close enough to Concord that we can shuttle to hotels if need-be. Looks like nice weather for the weekend.