Lamborghini has made only one Aventador J and have them display at the 2012 Geneva Motor Show and it is already sold. Since this is the only one, this car will be delivered to the rich owner after this.
This is not just an Aventador wit the top shell removed, they have added two small wind deflectors, safety bars added behind the seats and carbon fiber monocoque has been redesigned.
The Aventador J will be using the same 691 hp 6.5-liter V12 from the Aventador. Although with the weight shed, it is said tha that the top speed goes to 186 mph compare to the hardtop Aventador making 217 mph.
Hopefully this will not be the last time we see this car around. Since we have no idea where this car would be shipped and it might just stay in their garage most of the time.