this ought to be called the "Screw the Government" financing plan. It's advantageous to the purchaser, yes, but only incidentally to it's real purpose which seems to be the maximize the tax advantage / subsidy provided by local, state, and federal governments in the US.

They are trying very hard to position Tesla away from the Rich and Famous market segment. This new financing program isn't so much intended to increase sales of the Model S (which is oversubscribed IIRC) as it is to work out the kinks for the lower-end cars coming in a couple of years. And expand the market of people who can and should be considering Tesla vehicles.