This is an unconventional roadster with no roof to speak of, and one with an unconventional powertrain, featuring a V-12 with a supercapacitor hybrid system.

Like the look of the new Lamborghini Sián roadster? Unless you’ve heard otherwise, you’re too late. There are only going to be 19 made, and all are already sold, despite what is almost certainly a seven-figure price. Clearly you have to move faster than the speed of news to land a limited-edition Lambo.

The Sián roadster is an open-topped version of last year’s Sián coupe, although Lamborghini produced a relatively profligate 63 of those. The softtop uses the same Aventador-based platform, combining V-12 power with a hybrid system powered by a supercapacitor. But while electrical assistance is only a small part of the total output, with a 48-volt motor integrated into the gearbox providing up to 34 horsepower and the glory of the naturally aspirated 6.5-liter V-12 making 774 horsepower.
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https://www.caranddriver.com/news/a33250882/807-hp-lamborghini-sian-roadster-revealed/