As he was pulling in he must have saw the cam and said "ah another fuckin dashcam" in a way that sort of says that normally they would do things around or to a customers car that the customer wouldn't like. 

Mine turns on and off with the key since the 12v plug is switched with it. 

You can set them to do that, yes.  Mine keeps going for about two minutes I think. . .

That's a great idea. How do you get your dashcam to stay on when the vehicle ignition is off? Does it keep recording a set amount of time after the ignition is turned off?

I brought my TDI in for an oil change today. I don't think the tech thinks too highly of dashcams.