And good info you found…I hadn’t read about the 3-second requirement yet.
Back in the Audi problem days, I could never decide if it was driver error or not. Now that we have the victim being an experienced police officer who specialized in vehicle safety inspections, I leaned towards blaming Toyota and Lexus. Officer Saylor would surely know all the tricks in getting a runaway vehicle to stop, and I have no doubt he tried them all.
After reading about the floor mat recall and the 3-second button, I think Toyota clearly has another defective product.