Information listed below is according to Arrin's 1st video.
The truck is seen in the Goddard School parking lot for 10 seconds. It then exits the parking lot at 6:48 am.
Also, at 6:48 am S leaves his home driving a white panel van.
At 6:51 am, the truck is seen on surveillance camera in the neighborhood driving toward Barraza house.
At 6:52 am, truck passes the Barraza home. Driver makes a three point turn on Cedar Walk Drive parking behind Liz’s car, exits walking toward the driveway where Liz is still setting up. The murderer speaks to Liz for about 6 seconds. There are a total of three quick shots and then a fourth shot, which takes approximately 30 seconds.
At 6:53 am, killer sprints back to the truck heading east on Cedar Walk Dr. and then east to Princeton Place Drive toward Kuykendahl Road.
At 6:53-4 am approximately, neighbors call 911 and truck exits Princeton onto Kukendahl Road and makes a U-turn and heads back toward crime scene.
At 6:55 am, killer drives back by Liz’s house heading west on Cedar Walk Drive.
Four minutes later around 6:59 am Harris County precinct 4 constables arrived to investigate and secure the crime scene.
There is video footage captured of truck at intersection of Sandusky Drive and Brogan Ct.
When shooter left crime scene he took a left onto Sandusky Drive and went south passing Brogan Court and continued further south on Sandusky Drive out of camera view.
You can pick right up (for additional information) @11:45 timestamp.