Chevrolet is trying a new twist on viral marketing. General Motors Corp.'s volume brand said it's offering up to 10 free rides a day to college students on six campuses in a Chevy Aveo5 hatchback and filming the experience. Students are encouraged to ham it up. The videos will be posted within 24 hours of the ride to a special site, AveoLivinLarge. From here, the students can see the footage, pass it along to friends, or upload it to their blog pages or sites like Facebook. One student per campus will be a finalist, based on the video with the most views within a week of posting. One of those six students will win a 2009 Chevy Aveo5 if their video gets the most votes after five days of online voting next month on the dedicated site.