I have to agree with Frank.
Freescale was making VERY useful integrated MCUs before they became Freescale as I used to use them in building custom BioMedical research equipment for a research HSC in Texas.
Freescale has been running the "combo" processes for a couple of decades now. When I was there, we always met with automotive customers to help them partition their design to the best technological and economical advantage. The analog front end would often be a separage chip due to noise and total system cost considerations, but as the technology advances, more and more of the system gets integrated into one chip. This is the best case for automotive since there are fewer components and connections to worry about in reliablity, which reduces overall cost.
I recently did a survey of how many ICs are in the typical automobile and got a tally ranging from 350 to 500! The average total cost per vehicle ranged from $250 to $400. That puts a lot of incentive behind this kind of upgrade,where multiple chips can be replaced by a single one. Also the cost of the PCBs, cables and everything else can really be cut by going to more complex chips whose price is right and replace the functions (or in this case actually enhance the functionality by adding the anti-pinch capability. Over the next 5 years, the roadmap shows dozens of such "consolidation" chips for in-cabin functions, that do more for less.
Not sure we have enough data to make that statement resiston. A mature technology node in a depreciated fab, flash and analog require a few additional masks. Yield, die size and wafer cost will drive the rest of the equation - 2 of the factors we will likely never know..