I think the car situation came up before the 24th, imo. The plan was for the car, with the purse in plain view, to be in a parking lot where less than desirables would go to cash their welfare checks to be stolen. (I haven't seen where it has been verified the keys were also in the car, but possible and even more incriminating, imo.) Frankly, I don't see Casey coming up with all that on her own.
SeriouslySearching, I agree with this COMPLETELY. I have stated such early on. I think George helped Casey after the fact, and also cleaned the trunk. In fact, I think the whole family is in on at least the coverup. George may very well be charged with Accessory after the fact, IMO. I think Cindy knew what she was doing when she washed Casey's pants, but is not as culpable as George is. I even think that Lee knew, but did not help obscure evidence. IMO