Well, to answer OutbackAussie - I really don't think that it was so much the government that got this Toyota issue started.
Rather, I believe that the news media picked up on a number of highly unusual fatal accidents like this one and the one in California. The government hearings came after the fact.
I go to several car interest websites, and the current rumor of the day is that there is much more wrong with the Toyota "drive by wire" system than just the mechanical unit connected to the accelarator pedal. Many observors claim there are likely software issues in the car's control computer and Toyota is currently neither confirming nor denying it.
It is also worth noting that this issue goes back a number of years - probably at least four years, without attention by Toyota.