Reliable Source: Another motorcade?! Blame it on 'House of Cards'

Sick of motorcades and massive security entourages clogging up the streets this week (and, okay, protecting the dozens of African heads of state in town for the White House summit)? Brace yourself for at least one more rolling detail before Washington shuts down for the August doldrums -- but at least this one will be fake. "House of Cards" is filming along the Mall on Saturday, according to the DC film office. Doesn't sound like an actor-heavy production: the crews will be "shooting 'drive-bys'...