I have some thoughts on the truck, but my theory sort of depends on knowing for sure where it was taken from. IIRC, the Alexander thing started with one of those "I know someone who knows someone and they said......" type stories, which doesn't mean it's not true, but we all know how the game of telephone works and sometimes things get lost in translation.
Anyway, *IF* it was stolen from the shop in Alexander, that would be a very calculated move. There would have to be a good reason to make one's way all the way to Alexander to specifically steal a dump truck.
The reasons I can think of off hand are:
1. It was convenient because he knew the ins and outs of the company. He knew where to find a truck. He knew where to find the keys. He knew that more than likely they would not notice it missing until the start of the new work week. They can't report it stolen if they don't know it's gone...and if it's not reported then nobody will be looking. This gives him some time to move around a bit more freely.
.......and/or........
2. BC was already dead and he had temporarily stashed the body somewhere. (Did he have access to CL's car at this point? I know she was at ex's house, but did he come get her or did she drive her own vehicle to his house? Does her vehicle have a trunk or is it a hatchback? I think this is an important question. What if BC had spent the weekend stashed in her trunk? We know it wasn't in his trunk at the time of the wreck, so where was it?) If her body was temporarily stored somewhere, then he had to figure out a more permanent solution. We now know he chose the concrete plant and what better way to get in and out of a concrete plant without being noticed than by driving one of their own vehicles?
All that said, if it was in fact taken from the work site near the 430/630 junction, then it was more than likely just a crime of opportunity. He runs from the hospital and his lucky day...there is one of his recent employer's trucks and he just happens to know that they keep the keys stashes somewhere like under the floormat or above the sun visor.
Regardless of which scenario in which the truck was stolen, I am still puzzled why he was still so close to the hospital when he was finally caught. I'm racking my brain trying to figure out why he didn't get farther away from the last place he was seen, but then again as has been noted numerous times upthread, he's a real dumbass. So there's that.
