Scattered around each track are boost gates that will fill up your boost tank and assist you in reaching those insane speeds. You can also help fill up that boost tank by doing things in the race like making perfect landings or landing on top of another racer, these are called Boost feats. Pressing the boost button will send you hurtling onward, or downward, or upward and the color will drain out of the screen. Almost like tearing your retinas. http://naildbiter.com/3kfJe