Toyota cars did not fail safe in the event that both the accelerator and the brakes were pressed. Combined with the floor mats, this could create dangerous situations where drivers were unable to stop their cars using the brakes
(the standard objections that they should have turned their cars off or shifted out of gear still have some validity of course) The two sibling comments to my above comment address other potential technical problems with Toyota vehicles. Your Wikipedia link does not refute their points.
Reiterated:
What the NHTSA believed that they found in 2011 is overshadowed by more recent developments, mainly that Toyota was not being forthcoming with the NHTSA. In 2014, Holder said "Today, we can say for certain that Toyota intentionally concealed information and misled the public about the safety issues behind these recalls," Additionally: "The cover-up is still there on the electronics issue," says Sean Kane, an auto safety expert for Safety Research and Strategies. "This (government penalty) sends an important message, but it's a mixed message." Furthermore it has become clear that Toyota's code was a clusterfuck and that the alleged failure modes were very possible.
My point is that in both the Mcdonalds case and the Toyota case, the issue is not nearly as clear cut as the two most popular points of view present.