I heard that even with a heavily modified R34 GTR going around track for like 5 to 6 laps, the most it will need is around 30 seconds to cool the car down... so I reckon it is not needed though for the car... if you do go to the track, 30 seconds are nothing, just to cool the car down with the hood up! With the timer, I reckon it increases the risk of the car being stolen though... (I might be wrong here) cheers, richie