there are some local shows every weekend. at the chik fillet infront of lowe's (right near dulles town center mall) they have an informal meeting every friday night (or at least they used to, i presume they still do).
the burger king at the intersection of 28 and the prince william county parkway in manassas has an informal car show every saturday afternoon/night until about 10pm. i've shown 2 of my cars there on multiple occasions. some bike clubs have rolled up, along with a local GTO chapter. great scene. no points, no awards, just people hanging out and enjoying some cars.
here are some pics from shows at the place in manassas:
i think it'd be a good destination for our mid atlantic chapter.
i'll definately be at the fredericksburg show.