Originally Posted by ZMan8

A lot of track/drag racers will burn their clutches though to save time. Especially at the drag strip, drivers looking for the fastest time ride the clutch pretty hard because they never let go of gas fully.

Basically when they need to shift they will drop from 100% engagement of gas pedal to about 50-60%( instead of fullly disengaging the gas to 0%) before hitting the clutch pedal.

This will allow for smoother and quicker shifts with less footwork involved. However, don't expect your clutch to hold up.