 The body of the car , made entirely of carbon fibre , underwent extensive wind tunnel testing to achieve maximum downforce across all surfaces . As a result , the rear spoiler is two metres ( 79 in ) wide but only 30 millimetres ( 1 @.@ 2 in ) thick , the underside of the car is smooth , and the rear bumper has diffusers to take advantage of ground effect . Air is sucked into the engine compartment through the air scoop ; its positioning on top of the cabin makes the car taller than the Enzo . The exterior is available only in the white @-@ and @-@ blue colour scheme , a tribute to the America Camoradi racing team that drove the Maserati Tipo Birdcages in the early 1960s . The car is noted for the awkwardness that results from its size ; very long and wider than a Hummer H2 . This , combined with the lack of a rear window , can make parking the MC12 challenging . 
