Ford wants to attract younger consumers, those born between 1979 and 1995 and known as Millennials. The automaker projects that in 2010, when the Fiesta arrives at U.S. dealers, 70 million Millennial-aged drivers will be on the road, representing 28 percent of the U.S. driving-aged public.

'The Millennials are an emerging market force, with 11,000 reaching driving age every day,' Sam De La Garza, Ford's small car marketing manager, said in a statement. 'It's the most important demographic trend since the Baby Boomers, and it represents one of the greatest opportunities for Ford.'

The agents will be given missions with vehicles every month and will use social media networks such as Facebook, MySpace and FlickR to share their experiences.

Ed Kim, an industry analyst at AutoPacific Inc., said using social media could draw younger consumers and if Ford can generate excitement around the vehicle, it could grow from there. He pointed to recent examples such as the Smart fortwo and Volkswagen Beetle that saw an underground-swell of support.

'It can be particularly powerful when it's an interesting product and gets people talking,' Kim said.