Another one is to up-shift and down shift without using the clutch. It works easily when the engine rpm is manually synchronized to car speed as the transmission sees it. Some of the old 3 axle trucks with a "brownie box" (made by Brown-Lipe) were recommended to be shifted this way. A VW transaxle is a easy one to do this with. It's not nice to the little brass synchro's but if the clutch cable or levers should fail, the car can be driven home easily.............Bruce