An Eclipse won't qualify based on the mileage. See
http://www.cars.gov/index.php/faq#category-07 for all the details. You also have to have had the car titled in your name for the last year as well as had insurance on said vehicle for the last year. That knocks out most of the would be traders in this situation.
And to be honest, it's not quite as good as it appears anyways. The new car stores knew this was coming well in advance and jacked up their prices accordingly. I'm sure the brands going down the poopshoot(Chrysler, Pontiac and probably GM) are the best deals here. For example, I immediately ran over to Morrie's Nissan to look at a cheap Versa to drive for work. They have a base price of $9999. But after dealer prep, and other miscellaneous BS, the cheapest was almost $12k, no air, no radio and a stick. You want the far better looking hatchback with no options"? $15k. Thanks, I'll stick with my trusty STi that gets 21mpg all day long.