to get access to turbo mode go to options screen,press-up,left,down,right. then turbo option will appear at bottom of screen and will say "go buddy go go go"
211 mph car-go to car setup,set tire pressure to more,set downforce to less,set oversteer to less,set acelleration to more. each of these must be set to the more or less extreme mark! combine w/turbo mode and have fun lapping the others!