I think you are still stretching. These systems available to most buyers. Considering that "Americans paid an average price of $33,560 for new cars and trucks in April 2015"[1], and that all manufacturers offer it. For instance, contrary to your statement above Accord has it available for all trims, including on LX at $25K.

[1] http://www.usatoday.com/story/money/cars/2015/05/04/new-car-...