Come to think of it, a person could buy a truck for cash on Craigslist, put a fake plate on it, use it for a couple of days (for the crime), and then hide it or get rid of it, and there might not be any record of who made the purchase, because they just would simply never register the vehicle in their name ever. They could even have someone else make the purchase for them.
Or a person could borrow a relative's truck saying they need to move some things, do the fake plate thing again; and the relative might not even be local. They could tell the relative they wrecked the truck or even return the truck (miles away). Maybe the truck wasn't even registered in the first place.
Or they could just buy the truck from a relative or friend and do some of the same things - never register it, say it got wrecked, etc. Lots of possibilities. It takes a lot of patience to plan something like this unless this person just got incredibly "lucky." It was still dark out, I think, at the time of the murder. But there were lots of school buses and people going to work so the brazenness is still really strange. So many people have video; this person still took a lot of chances.