designed for two passengers and trimmed in leather. Leather trimmed sports seats were fitted together with electric windows and electrically adjustable heated mirrors. The dashboard unusually curves round and carries onto the drivers door, with a secondary instrument binnacle containing four analogue gauges, including a clock and voltmeter fitted on the front of the drivers door. Air conditioning and green tinted glazing was also fitted. The luggage space consists of a small boot directly behind and above the rear portion of the engine, also trimmed in leather. Production The car was assembled in a purpose-built factory at Wykham Mill, Bloxham near Banbury in Oxfordshire. Diana, Princess of Wales officially opened the factory and unveiled the first production XJ220 in October, 1991. The JV6 engines used in the Jaguar racing cars were produced by Swiss engineer Max Heidegger, but delivering the number of engines required for the XJ220 program was considered beyond his capacity. TWR formed a division, TWR Road Engines, to manage the design, development, construction and testing of the engines for the production cars. The JV6 engine used in the XJ220 featured little commonality with the engines Heidegger built for use in the XJR racing cars, being specifically engineered to meet performance and in particular, the European emissions requirements, which the race engines didn't have to meet. FF Developments, in addition to the design work undertaken on the gearbox and rear axle assembly, was given responsibility for the manufacture of these components. The aluminium chassis components and body panels were manufactured and assembled at the Abbey Panels factory in Coventry, before the body in white was delivered to the assembly plant at Bloxham. The car, including chassis and body components, consists of approximately 3,000 unique parts. The first customer delivery occurred in June 1992 and production rates averaged one car per day. The last XJ220 rolled off the production line in April 1994; the factory was then transferred to Aston Martin and used for the assembly of the Aston Martin DB7 until 2004. Guinness World Record Jaguar had performed high speed testing of the pre-production XJ220 with chassis number 004 at Fort Stockton, Texas in 1991 and recorded a maximum speed of , which was faster than any production car at the time. According to Car magazine, Jaguar hoped to attain with the XJ220, mainly for promotional reasons. The decision was made to undertake further high speed testing in