Use the Brick Boost to gain speed at essential times in a race. The Brick Boost can also be used to correct yourself if you are going into a spin. Also, if you use a ramp or a jump, hold down [Brick Boost] as you land and to speed off without bouncing along and losing speed. If it is a close race you may want to save your Brick Boost for the last lap, where a sudden surge of speed could win the race for you.