stomping on the throttle to get the tires to break loose. Once you get the tires spinning fast enough you can begin to ease up on the brakes to control a burnout across a parking lot like you see in those videos. That's how I warm up my tires at the track but I have manual transmission.
Also the correct way to test vtc's in to activate them at idle using software. If the idle gets rough then they are working. Unplugging them won't prove anything.