After a string of teasers, the Lamborghini Sian has been officially unveiled overnight ahead of its in-the-flesh debut at the 2019 Frankfurt motor show.
With a total of 602kW of power at its disposal, the Sian is the most powerful road-going Lamborghini to date, and is said to have a 0-100km/h time of under 2.8 seconds and a top speed of over 350km/h.
The Aventador SVJ, with its 6.5-litre V12, can complete the 0-100km/h dash in 2.8 seconds. It too has a top speed over 350km/h.
At the heart of the Sian's hybrid drivetrain is a more powerful V12 engine capable of making 577kW at 8500rpm. It is coupled to a 25kW electric motor located in the transmission.
Instead of lithium-ion batteries the Sian uses super capacitors, which are claimed to be three times more powerful than a battery of the same weight.
Located between the cockpit and engine for optimum weight distribution, the supercapacitors are charged during regenerative braking. They are discharged to fill in the torque gap during gear changes, or when the driver requests a power boost during acceleration at speeds below 130km/h.
Lamborghini says the Sian has lots of styling elements inspired by the Countach, including its six hexagonal tail-lights. The car's Y-shaped headlight graphics are taken from the 2017 Terzo Millennio concept.
The Sian has active cooling vanes which rotate in reaction to heat from the car's exhaust system.
Unlike other Lamborghini models, the Sian isn't named after a bull. Its name instead comes from the Bolognese dialect of Italian, and means flash or lightning.
To honour the company's founding in 1963, production of the Sian is limited to just 63 cars, and all have already been ordered.
No pricing has been announced, but the company expects each vehicle to be highly customised through its Ad Personam service.
The car to be displayed in Frankfurt has Verde Gea paint containing golden flakes and golden crystals, while the interior features aniline leather and 3D printed components.