Italian super car makers have developed a habit of selling their one-off design study concepts. That is completely understandable, because why let them gather dust in a museum when you can earn millions selling them to wealthy enthusiasts? The latest one-off to hit the auction block is the Lamborghini Concept S.

Essentially a Speedster version of the Gallardo, and the inspiration for the Gallardo Spider, Lamborghini Concept S was first shown to the public at the 2005 Geneva Motor Show. Naturally, and as with most Lamborghini design studies, the concept created such a buzz that the company considered producing it in limited numbers. But the world’s economy was on the verge of a complete collapse back then and so they abandoned the plan.

So this white Lamborghini Concept S remains the only one in existence and that makes it incredibly valuable. The car is completely drivable and has 180 km on the clock. It will be auctioned by RM Southby’s at the Art Automobiles auction in New York City on November 18th, expecting to sell for $2.5 to $3 million USD.