5. Sesto Elemento Concept

Estimated Value: $2.8 Million
The Sesto Elemento concept was displayed at the Paris Auto Show 2001.
It has a V10 engine with 570 horsepower and a six-speed transmission. It is almost entirely made of lightweight carbon fiber, which weighs in at around 2,200lbs.
We’re talking all-black design with subtle red details and the most beautiful lines.
Lamborghini claims the car can reach speeds of 62 mph in 2.5 seconds, and a maximum speed of over 185 miles per hour.
In 2011, only twenty Elemento concepts were made, each selling within days of their announcement.