Ten minutes for the vehicle to get around the block (which happens to include the CR/JR/MB home). TEN MINUTES!
Could have been driving all over campus and only came back that way 10 mins later.
Could have driven up alongside LS at some point and been talking to her, confronting her, coaxing her into the truck, attacking her, etc.
Unfortunately, the pictures don't give us any indication whether or not the truck was going the same speed or different speeds on the two passes.