Million Dollar Motor Club: Most Expensive New Cars in America

© Automobili Lamborghini© Automobili Lamborghini
Lamborghini Sian Roadster
The Sian Roadster derives power from a 6.5-liter V12 engine, upgraded with titanium intake valves, that produces 785 horses — the most power ever derived from a Lamborghini engine. The V12 gets supplemental power from a 48-volt electric motor delivering 34 horsepower for a total output of 819 horses. Engineers integrated the electric motor within the gearbox for instant response; the motor is also used for low-speed operation when backing or parking. The roadster uses a supercapacitor to store energy, rather than more common lithium-ion batteries. According to Lamborghini, the supercapacitor is three times more powerful than a battery of the same weight. The Sian Roadster will rocket to 62 mph (100 km/h) in less than 2.9 seconds, making it the quickest open-top Lambo ever. The Italian automaker says top speed is in excess of 217 mph — likely a life-changing experience with no roof overhead.

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