Description: By performing and combining these risky driving methods you can gain boost, which fills a yellow bar located in the lower-left corner of your screen. You won't have access to this turbo boost until it's completely full. Crashing depletes some of the amount you've earned, creating for a suspenseful driving environment. If you successfully manage to fill the boost meter you will be able to draw upon a nitris-type effect and turbo past the competition.