Whoa..
OK- I give up- WHAT is he thinking? That a peterbilt tanker will be easy to drive without the choppers finding it? Easy to hide?
Only if he's an apprentice thief; or 10 years old.
An experienced hijacker would have another tractor, and stolen license plates (for the trailer) all ready for a fast switch somewhere. It would take less than 10 minutes and would be almost impossible to find.
The stolen tractor would be left (without the tank) at the nearest place where it could be hidden from view.