What troubles me about the white truck is the explanation that it did not really go around the block. Apparently there were two cameras viewing the same area with timestamps about 10 minutes apart. If the truck really went around the block twice, then it should have appeared on both cameras twice. If it went around the block once, it should have appeared on each one one time. I am surprised that they did not figure this out right away.
The other thing that surprises me is that the white truck seems to have been the ONLY vehicle in the area that night that LE has had any interest in. I would think they would want to talk with the driver of EVERY vehicle in the area that night.
I'd agree with this as well. I can only assume there wasn't much traffic and possibly they were able to read plate numbers so they were able to confirm those other vehicles (if there were any) and maybe talk to the owners. Remember, at one point it was said the truck didn't completely stop at a stop sign/light which made them unable to read the plates.
The only thing I can think of on the truck appearing to LE to circle the block is maybe the camera footage was viewed by different investigators and they compared notes later and saw the different time stamps and thought "AHA... And 10 mins later there's that same truck!!!"... Soooo... they were distracted and caught up more by the timestamp than realizing that it only appeared once on either camera.