yseJ
Empire strikes back
This makes sense dap and repHe left that gas cap at the junk yard. The cap he used to get the serial number off of was the tracker on his civilian car.
Mike changes cars constantly....the car he used to rob the cartel goon isn't the same car as the one he went to kill Hector with, and then on top of that he has his civilian car.
Knowing Gus they probably bugged all his shyt....and a random car he's using to do dirt winding up in a junk yard really wouldn't raise suspicions. They left him the DON'T note, so they obviously don't care if he knows they're on to him.
Fred.