With an auto box, if you hold the brakes with your left foot and stamp on the throttle with your right, how long before you toast the torque converter?
As long as the wheels are spinning, the torque converter should be fine. A line lock is required for best results so they spin freely without smoking the brakes. Judging by the Yank burnout contests, the tyres let go before anything else does.
Oh, OK. I ask because I saw an idiot do it before leaving a petrol station earlier. Thought I had heard that this will toast torque converter rather quickly.