Maybe. Or maybe not. The more I'm catching up, the more reasonable doubt is piling up.
To believe it was intentional, one would have to believe that:
1. He hated his son or wanted him to suffer a horrible death for some other reason (alleged internet search of a veterinary site about animals/pets being locked in hot cars). Even the sociopath Casey Anthony, who absolutely did want to live a child-free life, (allegedly) chose a "painless" way to kill Caylee.
Disagree. IMO, as a sociopath, he didn't have to hate. He just had to put his needs first. His inability to love anyone other than himself, or feel empathy, would cause him little to no discomfort in the thought of causing Cooper discomfort. Also, it's not like he threw him into a pit with wild dogs. He may have convinced himself he'd only get hot, then sleepy, sleep, then die. No pain, in his mind, to that equation.
If his goal was "just" to be child-free, murdering Cooper in this way is highly unlikely, IMO.
2. When is he alleged to have begun "premeditating" a murder? A week beforehand, when he watched that video? And then left an online text trail providing the missing motive on the very morning of the "murder," and then sexted all day rather than keeping his nose clean?
Again, I believe he could be a narcissist and a sociopath....and lazy, just like Casey and in a sense, Jodi/ He thinks he's smarter than everyone. Or that everyone is too stupid to figure things out. Why would Casey dump Caylee so close to home? Why would Jodi leave the camera in the washing machine and not get rid of it wherever she got rid of the gun. Narcissism, sociopath, arrogance....laziness.
3. How long did it take him to reach that intersection to daycare or to work? It may only have been .2 miles, but it was work AM, not a small street, required at least one turn to reach, likely in traffic.
30 or 40 seconds to that intersection?
Not that much traffic. It's after 9. Kids are ay school, a lot of people are already at work. It's probably why he leaves for work later. Avoid the 6-8 am stand-still traffic.
5. To believe it was planned, one also has to believe he chose to murder his son in one of the most agonizing ways imaginable, in plain view, in his own car, at his own workplace. Cooper wasn't an infant. How could he have felt assured Cooper wouldn't yell when his dad first left, or move around enough to get noticed by someone in that parking lot?
After following a lot of cases here, and while I agree his death was agonizing, I'm sure he could imagine/justify worse. We've seen more violent deaths of children. Ones that involved rape, sodomy, and being beaten to death with a roller skate. And all this assumes he was capable of feeling love or empathy, of which I'm not convinced. We know there are parents who are incapable of feeling love or empathy for their children. And, as I stated above, he could just as easily have convinced himself he would get hot, cry, feel sleepy, sleep, die. Or he chose not to think of how his death would feel at all, if he has no empathy.
All murderers have to take chances. Jodi, Casey, they all did things that were risky. Risk goes hand-in-hand with murder. He may have made many steps to minimize that he wouldn't be seen (arrive later than most his co-workers, park in a mostly filled section) and that he wouldn't move around a lot (use old infant seat, put straps on lowest, tightest setting.)
6. He brought coworkers near his car at lunch. He didn't pay any attention to coworkers walking towards his car in the AM.
Did he 'bring them' or did he just not have a feasible reason to tell them not to come near his car with him. Worst case scenario (in his mind), is if someone discovered Cooper before he died, he'd drop to his knees and act devastated and use the same routine he did at night. The risk was high, but the reward--to a sociopath narcissist-- if Cooper died and he didn't go to prison for life for it, would be great. Same as Casey.