0% interest on a new car?

Hi, I'm looking to buy a new car and there happens to be a "Toyotathon" going on right. I think 12 toyota models will get 0% APR (if u have good credit I'm uming). But the problem is, I'm not really interested in any of those cars. Do you think that the car dealers are desperate enough to get some car sales right now that I could negotiate a 0% APR for a new scion at the same dealership where they are having that promotion already for other cars? Are they even able to do that? I do have good credit and a little over 50% of the car's total price for the downpayment