If there's nothing going on, the DC ProSolo is this weekend at FedEx Field. Drag race start into a mirrored autocross with a right and left side course. I'll be there #92 RT2 along with several other FRS/BRZs. I think you're too late to sign up, but there will be a lot of cool cars from across the country there.
http://www.scca.com/events/index.cfm?eid=5474