Fuel economy will suffer and the clutch plates will wear out fast if your driver dumps the clutch, as will the other extreme "� slipping the clutch slowly with a generous dose of accelerator. In heavy traffic, it is better to employ first or second gear, release the clutch completely without using the accelerator and then just let the car move on, with the engine idling. This improves fuel economy without wearing out the clutch system . To slow down, just dab the brake; there is no need to engage the clutch "� the engine will not shut down so quickly. This is the level of expertise that is expected from an experienced chauffeur.