The team behind Britain’s newest street-legal track car, the Elemental RP-1, claims it will become the world’s lightest sports car when it debuts at the Goodwood Festival of Speed later this month.

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Targeting fellow weekend racers from Ariel, Radical and KTM, the Elemental RP-1 follows the familiar formula of combining lightweight construction, an open-top body and a powerful turbocharged engine.

With a carbonfibre tub and aluminium throughout its chassis, Elemental claims the RP-1 will weigh just 450kg in its lightest iteration.

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Its 2.0-litre four-cylinder Ford EcoBoost petrol engine produces 206kW of power and 360Nm of torque, giving it a whopping 458kW and 800Nm per tonne.

Elemental has employed motorsport aerodynamics experts to ensure that power gets to the ground, and claims 200kg of downforce at 160km/h.

No other performance figures have been released at this stage, though super-sharp sprint times are all but assured.

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While minimalist in design, the RP-1 will also come with a number of creature comforts, including adjustable suspension to switch between track-focused and more comfortable road-going setups, a programmable dashboard display linked to built-in cameras, a heater, and luggage space.

Full details will be revealed when the Elemental RP-1 debuts at Goodwood on June 26.