Here is what I get from reading this whole thread.
ICA decides to dump the car at the Amscot on a friday hoping to have the car stolen. Best case scenario for her because then she hopefully NEVER sees the car again and it would only bolster the Nanny Kidnapping story. Car gone, end of story.
She drops the car off, runs home, showers, throws her pants in a white kitchen garbage bag at home, grabs some food so it looks like she is carrying groceries and not just a garbage back full of stinky pants. She brings groceries for two reasons, she needed food to eat and she was a thief by nature and to encourage TL not to question her on WHY she isn't taking anything out of the car. Parks the car near the dumpster to cover the smell, takes her pants out of the kitchen garbage bag, quasi cleans car and grabs some garbage from around, puts together a bag of "garbage" puts it in the trunk over the stain.
throws her purse in a most obvious place, scatters her stuff around, makes it look like it might be worth stealing and hopes it gets stolen. If it doesn't then maybe it will air out. She didn't need a vehicle at that moment and didn't want to be hauling the smell around with her.
I think she may have forgotten to throw her pants in the dumpster tho. Those pants needed to go, but she had all this other stuff to do before TL came to get her. And With running back and forth to her house, etc., she forgets to throw the pants in the dumpster.
Later on she gets gas cans to cover her butt in case it DOESN'T get stolen. She also needs to APPEAR like she is going to get her car, at least to Amy.
She has to go by there in a few days and see if it's still there. If it is, she will take it. If it isn't then she will rejoice because its been stolen. Problem solved.
There is evidence that she went to check on the car...she had to keep checking on the car. She had to know what was going on with it. If it was still her problem.
I don't think she anticipated it being towed. I also agree with some fellow posters who mentioned that she DIDNT find out that it was towed until her mom and amy came knocking at TL's. She was caught off guard with that one.
But in her head, that car was going to sit there till either, A) someone stole it, or b) she went back to get it when she would have time to get rid of it (provided the smell HADN'T) improved. c) the Smell improves and it becomes drivable again. I don't think would have torched it if it didn't smell bad any more. Not for a second do I think she would have any bad memories of the car. Anyone who can triple bag their daughter and heft her out to the swamp doesn't suffer of "bad memories" of THINGS.
My THEROY on what would have happened if the car hadn't been towed or stolen in a few days. ICA would have put enough gas into that car to get it somewhere remote. Cleaned it again. Wiped it down and then lit the trunk on fire. Although, my guess is it would have ended up burning behind the school 4 blocks from her house.
She doesnt think too far ahead, IMO. She mostly just goes with the flow. It's extremely adaptable. She just comes up with things on the spur of the moment. This is why she is so obvious. Because she didn't put thought into any of this. The tattoo is a brilliant example of how truly stunned and selfish she is, because she doesn't THINK ahead. "I wonder if getting a tattoo right now will look bad?" What ever scenario she had concocted in her head about what had "happened" to Caylee, she never stopped to think, how will this tattoo reflect on what has transpired. It makes me Ell Oh Ell out loud.
ETA. I am kinda iffy on my garbage bag theory tho. Can anyone tell me if we know where that garbage from? Was it for sure from TL's apartment? Of did it appear to be miscellany? I recall Arm and Hammer products, pizza box. I should go look at the evidence pics. I might be complete off base with the garbage bag thing. I would think if she went home to shower as some people suggest, then the pants would have had to have traveled back to the car with her and not on her. And putting them in a white kitchen garbage bag made sense to me. I wouldn't want to put them in a back pack and risk transferring the smell. But why would she have a bunch of loose garbage and arm and hammer bottles and pizza boxes in her car unless she was a total slob?