I don't think it will work. New cars are expensive, so buying a low milage-late model used car would be cheaper overall.
link:
http://autos.yahoo.com/articles/autos_content_landing_pages/565/chrysler-offers-gas-card-as-incentive/;_ylc=X3oDMTE0czZzZjBqBF9TAzI3MTYxNDkEc2VjA2ZwLXRv ZGF5BHNsawNnYXMtY2FyZA--

to little to late.

they probably just tack on the extra gas money hidden into the price of the car somewhere, I agree with buying pre-owned

They are after the new car buyers and they will get some. A new marketing tool.