I am catching up, but I just wanted to add my two cents on a few parenting related issues:
-The car seat buckle - I don't think he would have been able to let himself out of the car seat. My kids can't, and they're his age and a few years older. We have Britax car seats, which are nicer than most, IMO (I paid close to $300 for each seat - mainly b/c I wanted the 'safest' and 'top of the line' for my peace of mind.) and I have seen other kids in the $40-$100 seats and their seats are much lighter and the locking mechanisms on the harness are a lot more dainty and maneuverable than the ones that my kids have. But even then, I do feel that 2 is pretty young to be able to completely undo the seat, because the harnesses are made so that it would require an adult to put the pressure necessary to press the button to release the bottom part of the harness. I could see a kid getting their shoulders out and maybe wiggling out, but IMO, that means that they are not strapped in properly and that the harness is WAY too loose. If they can actually undo the harness and it is properly adjusted to the child, then I think that the seat is defective and should be inspected - MOO of course.
Now, assuming he set out to kill Cooper, I assume that he made sure it was very tight. (that makes me sad to write)
Regarding passerbys hearing screaming or crying, I'm just not sure about that. He parked on the far end of the lot, right? And so there were not any cars except for the one on the side of him, because there was grass on the other side (the passenger's side, right? Since he backed in?.) He came in late, by most standards (9:30 or so, IIRC.) If it only took an hour or so for little Cooper to pass, then I think the odds of someone hearing a baby through completely rolled up windows on the far end of the lot, when most cars were parked for the day were low. Plus, Cooper was rear facing and the car was backed in. Maybe he figured even IF someone found him alive, he would play the worried dad and just be all 'OMG I forgot my son... Thank goodness he's alive!' However, I think he really did everything that he could to keep the odds in his favor (and against his precious little boy.) The amount of thought put into it makes me sick. And then for that creep to kiss his son - it makes me sick. At least he's away from those two lunatics now - sad as it may be to say that.
![Frown :( :(](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)