The McLaren P1 is a mid-engine design that uses a carbon fibre monocoque and roof structure safety cage concept called MonoCage, which is a development of the MonoCell used in the current 12C and 12C Spider.
All the body panels are carbon fibre composite to reduce weight.
There are also very few body panels. The McLaren P1 has large clamshell single-moulded front and rear panels, which are attached to the central carbon MonoCage, and that’s it, apart from two small access flaps in the rear, a front bonnet and the two doors. This reduces weight and the number of shutlines, creating a cleaner appearance.
The large carbon composite panels are also multi-functional, with integrated scoops and ducts to boost aero performance and cooling.
Here are some pictures of the new car.