Google searching 'i3 deals owner choice', the first one that comes up is Roswell, Georgia.
Their deal is $12500 down (which you get back in rebates), and $129/mo. I don't know what the configuration of that particular stock number is.
I assume this is 'owners choice' and not flex, since they're counting the $7500 as a discount of the down payment. (it really wouldn't be a good deal if this was flex and you owed them the car plus $7500 to satisfy the balloon payment)
Of course, This only works if you have $7500 in federal tax liability (i.e. make ~$80k a year or more) and qualify for the Georgia rebate (the details of which I don't know)