BrandWeek has a cool story about Ford Motor's creative use of flash mobs to promote its new $18,000 Fusion compact car:

"Ford's effort will use text messaging to give last-minute locales and times for a series of unannounced multi-city concerts featuring emerging artists like Jermaine Dupri, Yellowcard and Fat Joe. The effort, Fusion Flash Concerts, a collaboration with Sony Pictures Digital and JWT, features ten artists doing concerts in ten markets starting next week in New York City followed by Atlanta mid-month... Ads in New York City subways and in phone booths as well as national and local alternative papers will promote."

The Ford Fusion Web site is also building buzz with a collaborative photo-sharing page and a viral e-mail marketing campaign.