I'm a real estate broker and mold is a big issue right now in real estate transactions and as such I've learned a lot about it.
There are a bunch of different types of mold, only one or two that will make you as sick as the mold that effected C.L. Taylor's mother, which was probably Stachybotrys (toxic mold, black mold, etc). I've never heard of a case with that type of mold in a car.
Different materials will grow different types of mold, stachybotrys grows mostly on sheetrock or drywall. There really isn't anything in a car for mold to consume to the point where you could have an extreme enough infestation to make you sick, as can happen in a house.
What you get in a car is more likely a mildew or allergen mold, which can aggrivate allergies but isn't likely to hurt you.
If you have mold, you have water. So if your RX is "infested with mold" C.L. Taylor, water is getting in there somewhere...