****IN STOCK.**** 1:43 Diecast Model Mattel Elite Series Lamborghini Reventon. Lamborghini Reventón (pronounced: reh-bent-ohn) is a mid-engined sports car that debuted at the 2007 Frankfurt Auto Show. It is currently the most powerful & expensive Lamborghini road car to date; costing one million euro. The official press release states that only 20 of the full size car will be built; plus one additional example for the Lamborghini Museum.