G20 summit will be held 11 Nov ~ 12 Nov 2010 at COEX in Seoul.
At this time, Government will control traffic around COEX, Samsundgong.
All car will not be easy pass this area.
Specially Seoul Subway Number 2, will not stop at Samsung station from 00:00 to 22:00 on 12 Nov 2010.
So if tourist has plan to go this area, need to reschedule your plan.