I am just baffled by this guy's apparent non-attempts to cover his tracks.
It seems like the whole thing was some big freak out and he panicked and drove around willy nilly, tossing out her effects. I just don't get it. I am thinking this was premeditated enough that he planned on approaching Whitney that morning and assaulting her sexually. And likely planned on killing her, knowing she would report an assault.
Why did he not also have a more organized plan for disposing of evidence after the fact? Where is the disconnect?
Just a guess--low IQ. (Not being a smart-arse, nothing else makes sense IMO.)