It's my understanding these acceleration excursions have been occuring in a variety of different types of vehicles; stick shifts, automatics, hybrids, etc. I would imagine throttle designs for all of these these models would be very different.

If this is indeed the case, it suggests the problem resides not in a weak spring, sliding carpet, sticky mechanical linkage or other simplistic solution, but in something fundamental all these models have in common. This in turn suggests that perhaps the computer control is at the heart of the problem, something that the industry, particularly Toyota, certainly doesn't want to hear. An undiagosed and intermittent flaw in the brain of the vehicle would require even more millions of cars be recalled and that circuit be replaced with hastily-designed and poorly tested alternatives. This could easily destroy a giant company, perhaps unfairly. But it also gives Toyota plenty of incentive to cover up the cause of the problem.

It is also a real possibility that runaway throttles occur with all throttle designs, albeit very rarely, and that only selective and sensationalistic reporting and media hypersensitivity are exaggerating this problem and pointing the finger unfairly at this marque. For example, do other manufacturers besides Toyota also experience occasional cases of runaway acceleration? And if they do, isn't it obvious they would do everything they could to not publicize it and let Toyota take the heat?