 This is WTOP News. Facts Matter. 123. A fiery early morning crash happened along I-270 and injured several people. Montgomery County authorities say it happened around 4 this morning on the southbound lanes of I-270 near Montrose Road in Rockville. Two cars slammed into the jersey wall there and one of them burst into flames. One driver fled the scene. Three people in the other car were treated for non-life-threatening injuries.