Another question has come up: Where can my dad obtain a map of the fuse box? The fuse for his cigarette lighter seems to be blown, but opening up the fuse box and looking at the diagram inside the cover did not seem to shed any light on which fuse is linked to the AC outlet/cig lighter.
In other news, my dad was in town with the car again yesterday. This was the first time I saw it in daylight, and the squarish exhaust tip struck me as being somewhat aftermarket looking. I got down on the ground, and sure enough, it had the letters "TRD" on the side!
So this is great, not only did the previous owner absorb the cost of putting a cold air intake on that car, but it's also got an aftermarket exhaust. I'm guessing it's a cat-back system, but for all I know, it could be just the muffler and exhaust tip.
That certainly explains the throaty growl at full throttle. Dad let me drive it again, and the power was more than adequate.