After just an inch of snow Wednesday night, Washington, D.C., traffic was plunged into traffic chaos by a small storm system. Wednesday’s untreated roads led to icy conditions, with more than 100 area accidents and drivers at a standstill for nine hours. Even President Obama’s motorcade slid on the roads, making his evening commute stretch to nearly 90 minutes. A second, far larger storm may drop up to two feet of snow in the coming days, forecasters say.