"We need to know speeds to know if there is a traffic jam, " BMW's Freymann says.

CNN: Behold the?all-seeing, self-parking, safety-enforcing, networked car

So every Friday at 5pm there is a traffic jam of cars full of people going to Sydney for the weekend.

BBC: Canberra: Deathly dull at 100?

Within minutes, there is a traffic jam.

CNN: BRAVE AS A LION

Announcement from Genachowski : He notes that there is a WiFi traffic jam.

FORBES: CES: FCC Moving To Add WiFi Spectrum, Genachowski Says

The effect, of course, is to slow things down and hold you up, as in a literary traffic jam and there are numerous descriptions of traffic jams and routes through London.

ECONOMIST: New fiction