 After a brief romp through the city , the two head @-@ to @-@ head vehicles face each other and pass on either side of a large green scanner . The scanner reveals that the opposing car is really full of aliens in disguise , thus prompting a shoot @-@ out between the two paired vehicles . Both cars race to shoot the other 's " fusion exhaust port , " a glowing red light atop their vehicle . A hit causes the opposing vehicle to wildly spin out of control , offering more time to collect points while they spin . 
