Bleg for Help re Morning Commute Down Clara Barton/MacArthur:

I haven't been able to locate a good D.C. traffic discussion board, but maybe a V.C. reader can help: how is traffic around 8:00 a.m. on the Clara Barton Parkway/Canal Road or MacArthur Blvd going south from Cabin John/Glen Echo/Bethesda? How long does it take to get past Georgetown? Thanks.