Ever since Edison perfected the electric battery, engineers have sought ways to unleash a rush of voltage at an instant. While every other hypercar makes due with Lithium-Ion cells, the Lamborghini Sian Roadster has been unveiled with a powerful supercapacitor. Combined with a 34 horsepower electric motor, the hybrid system only weighs 34 kg (75 lbs). "Sian" literally translates as lightning, and that is what capacitors do. They charge in a few seconds to unleash every electron simultaneously. Every old TV, air conditioner, and neon light uses them to start up, whenever a massive shock is needed.

That is why they make a perfect fit for hybrids. Electric cars need low voltage, sustained power, while the Sian will have a 34 horsepower burst of acceleration at your command. Titanium intake valves and a few other trick components were added to the V12 to achieve 785 horsepower. Adding 600 amps at 48 volts allows the total output to be 819 horsepower and 560 lb-ft of torque. The 7-speed single-clutch transmission has been calibrated to maximize electric power during gear shifts. Lamborghini has perfected the technology without the complexity and incredible weight of a dual-clutch gearbox. The press release says drivers will no longer feel the gears change, as electricity takes over for a few milliseconds.

Instead of the ALA system used on the Aventador SVJ, the Sian Roadster makes use of smart materials and electric servos to channel air around the body. This allows a top speed well over 217 mph after reaching 62 mph in under 2.9 seconds. The capacitors fully charge every time you press the brake pedal, saving on brake wear, and keeping a burst of energy at your command. The hybrid system is so powerful that it even adds 10% more power to the ground in 3rd gear. While every other hypercar uses high voltage to accomplish their goals, Lamborghini has done more while running on only 48 volts. Not only is the Sian safer, it represents the future of high-performance electric cars. The only downside is that Lamborghini is only building 19 of them, and each one is already sold.

CEO Stefano Domenicali said: The Sián Roadster encapsulates the spirit of Lamborghini. It is the expression of breathtaking design and extraordinary performance, but most importantly embodies important future technologies. The Sián’s innovative hybrid powertrain heralds the direction for Lamborghini super sports cars, and the open-top Sián Roadster affirms a desire for the ultimate lifestyle Lamborghini as we move towards a tomorrow demanding new solutions.”

Designed without a roof in mind, the buttresses behind the seats evoke the lines of the periscope roof found on the early examples of the Countach. As this unprecedented technology trickles down through the Lamborghini lineup, you will see it here first. Click the button below to find our dealer near you and stay with us for all your Lamborghini news.