The senate has approved an additional $2b for the program! just google "cash for clunkers" there's a bunch of sites with updated info. Your vehicle has to qualify, not all do. For the most part, the clunker trade ins would get more credit ($3500-4500) than they are worth. If your car is worth more than $4500, then you shouldn't use this program.
BTW, I have a corolla, LOL, 35 mpg and 13 yrs old. No problems whatsoever.
