Anybody following the Toyota unintended acceleration lawsuits?

That depends on the failure mode. If expert testimony were to the effect that the only possible failure mode (for example, TPS potentiometer getting dirty) would increase the resistance of the TPS pot and return the car to idle, Toyota could easily win. (Unless, of course, the jury was overly-sympathetic to the plaintiff rather than doing its job properly by evaluating the evidence dispassionately).

Remember all the U.A. lawsuits against Audi? It was proven that in all of those cases the driver confused the accelerator pedal with the brake pedal. The same thing could have occurred in the case of Toyota. Never underestimate the stupidity of the American public.

What failure mode are the plaintiff's attorneys trying to prove?

What failure mode(s) is the defense claiming could have occurred?