Right, but time will tell whether Toyota's problems are indeed the floor mats or there is an electronic glitch which led to the run away car and trooper (+family's) deaths. It is hard to imagine a floor mat jamming so tightly that the driver can't kick it away and release the pedal, or in the case of a trained State Trooper, not have the presence of mind to shut off the engine. Who knows.
The point is, elecronics in vehicles (and airplanes) have taken over. I don't see how one system (autohold) is any less trustworthy than the other (e gas).