http://www.mclarencars.com/cars/f1_customer-care.htm
McLAREN F1 ROAD CAR - CUSTOMER CARE
With a total of 72 road cars in 12 countries around the world, McLaren have established a three-tier system for providing service support for the McLaren F1.
Primary support is provided by a local Authorised Service Centre, which carries out routine servicing. At the next level, McLaren will fly out a technician who is capable of undertaking more detailed work, either at an Authorised Service Centre, or at the customer’s premises. Finally, in the rare case that major repairs are required, the car is returned to McLaren. There are eight McLaren Authorised Service Centres around the world. Each one has technicians who have attended a dedicated training course at McLaren’s premises in the UK, and are fully qualified to service the F1.
McLaren Customer Care headquarters in Woking, England, not only maintain the UK cars, but provide technical support and parts for all the F1s. McLaren Automotive has a continuing commitment to support the F1, and recently Customer Care have developed a multi-media service procedures and parts catalogue to improve the quality of information supplied to Authorised Service Centres and customers.
Not that servicing the F1 was ever an afterthought. During the design stage, provision was made to carry out "remote diagnostics". Every F1 is supplied with a modem, which enables Customer Care to "talk" to any F1 anywhere in the world. Not only can the McLaren Automotive technicians read any logged errors in the ECUs, they can carry out a series of diagnostic procedures on items as varied as the air-conditioning system and the fuel gauge. This can save time and inconvenience for the customer, and is typical of McLaren’s application of technology to provide solutions.
Frankly, that's the least I'd expect!