From what I am beginning to read, the newest cars, and not just Toyota have gas peddals that control the computer and have NO throttle cables whatsoever. I suspect that because putting the car into neutral, and turning off the ignition seems to have no effect on stopping it, it looks to me IMHO that a computer glitch similar to a pc computer glitch caused this (freezing). I have been told that auto trans shifters in new cars are computer controlled as well. Just how hard is it to shift to neutral otherwise? Too much computer control in a car exposed to 600,000 volt power lines, cell phones, radio and tv stations, satellite reception. Plus static build up from friction in and around the car.
I had an old Dodge decades ago that had an engine rebuild and immediately after taking it home, the gas peddal locked at max (linkage incorrectly installed) and just turned off the key and reset it manually, then fixed the problem.
I have also heard of cruise controls on new Toyotas going out of control as well. Now add all the problems with engine oil sludge (google that) prematurely killing Toyotas engines, severe rust recalls and boy are they screwed.
Too bad the victims in the runaway cases are unable to speak for themselves. Hopefully justice will prevail.
My '05 has a mechanical throttle cable. Lucky me.