Built by Williams Advanced Engineering for the 2015 film, the C-X75 stunt cars were designed to withstand punishing chase scenes. Constructed around a robust, tubular spaceframe chassis with rally-derived suspension and Jaguar’s 5.0 litre, supercharged V8 engine, CALLUM’s private customer commissioned the Warwick-based team to transform the C-X75 for road use whilst carefully preserving its iconic history.
To achieve the Individual Vehicle Approval (IVA) certification needed for UK road use, CALLUM’s engineers made hundreds of changes including new E-marked glass, switchgear, a quieter exhaust and catalytic converters along with associated engine calibration tuning. Having previously achieved IVA for other niche cars not originally destined for the road, such as Aston Martin’s DB4 GT Continuation Series, CALLUM has accumulated significant experience to develop low-volume, novel engineered solutions. Examples of the C-X75 include creating new wing mirrors with integrated side repeaters to replace the foam models used on the stunt car.
In addition to satisfying the legislative requirements, CALLUM’s craftspeople sought solutions to improve the quality of the bodywork and fittings. Surplus quick-release latches, essential to enable access during filming were removed. Panel gaps were reduced and aligned, the carbon fibre surface finish was enhanced, carefully resurfaced and repainted.
The original stunt car C-X75 was praised for its taut body control, sharp steering and agility. Led by CALLUM engineering director Adam Donfrancesco, its in-house engineers ensured the fluid and engaging driving dynamics were retained by making detailed but minor adjustments to dampers and ride height.
Its public debut will be on the FBHVC's Drive it Day, 21 April 2024 at Bicester Heritage’s 'Sunday Scramble'.
