 The interior of the P4 / 5 was designed by Glickenhaus himself with an iPod nano stereo and a tablet PC which features not only GPS but a 3D model of the car as well as a complete parts list and manual for easy servicing . The P4 / 5 also sports improved air conditioning over the Enzo and a high @-@ strength alloy roll bar redesigned because the original was too thick and obstructed Glickenhaus ' view . The seats are custom built , Glickenhaus ' and his son 's bodies were scanned so Pininfarina could mould the seats for their comfort , accessibility and view of the road ( as with race cars ) . With a frame of carbon fibre composite , the seats are covered with a black mesh and red leather as selected by Glickenhaus ' daughter . Pininfarina rearranged the wiring of the car so as to make the car easier to service and 595 lb ( 270 kg ) lighter than the Enzo . 
