Well, it's just a natural progession of things, especially with CAFE Standards. Automakers are basically in a position to get as much power as possible from every last cubic inch of displacement. In the past two decades, they've really started getting creative with things like Variable Valve Timing, being able to run only 4 cylinders of a v8 car while at cruising speeds, better forced induction technology, etc. Engines have gotten crazy complex and the only way to make them work reliably is with the aid of computers. I think where the problem comes in though, is in recent years with the introduction of infotainment systems, all of the sudden there's a giant back door into the car. The computer that's used to run the car is no longer isolated, but exposed to radio signals and wireless networks. To be completely blunt, and I don't know if it's the case or not, but if car manufacturers aren't being careful with the security of the infotainment systems, they're being wildly irresponsible.