To clarify: The thieves are targeting tradesmen and their tools. They steal the truck, grab the tools then dump the truck somewhere.
The stolen tools are then taken somewhere else and sold at swap meets, usually out of the area.
They work in teams in our neighborhoods looking for a set of keys left behind while a workman is unloading his truck for the start of the job first thing in the morning.
SBPD is the source of this info.