Wow!
I wrote this yesterday:
I think he must've expected his car to be seen but that there's so many white Elantras and that his was registered in PA, that it wouldn't matter. I saw somewhere that there's 90 white Elantras registered for student parking in UoI campus. Add that figure to locals within 100 miles radius and I...
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Of course, is is far cry from your comprehensive logical factual-based chronology, but some points are fairly similar. Scary, isnt it?
You are onto something, i would only add that the police already confirned that they received tip-off on the car, so perhaps that was what triggered shifting the focus to BK. Of course thst may me a red herring, but as this was reported after the arrest, i tend to believe it is true. I think the tip-off on the car was first, video and images confirmed that car was in the area before and on the night of the murders, but NEVER AFTER.
Because of the information about the car, LE so quickly without hesitation eliminated the 'usual inner circle suspects' as none if them drives white Elantra. And as those eliminations were conducted during first week after the murders, I agree with you that LE were focusing on Elantra very early during the investigation, first couple of days.
I am also not sure that BK left WA for Thanksgiving break, as he may had scratches and bruises on his face, left by victims. He is loner, he may holed in his flat waiting to heal.
I have never followed a live criminal case even less sleuthing in my life before, but I am excited and (hopefully!) fast learner.