The Aventador J is billed as a "sportsbike for two;” and as such, not only is it roofless, it's also bereft of any unnecessary frivolities like windshields, air conditioning, and satellite navigation. They'd do away with the seats, too, but there are those pesky road safety rules which the Aventador does follow.
Instead, the Aventador J has flexible carbon-buckets and an interior... errh... cabin... errh... passenger space clad in a special flexible carbon-fiber fabric called "Carbonskin.” This keeps your rear end and back comfortable while your head and shoulders are being buffeted by 300km/h + winds. Needless to say, helmets are a necessity. And to help make you feel even closer to the elements, painted bodywork flows between the driver and passenger while the door sills drip down low on each side. This accentuates the Aventador's wide hips and shoulders, which cover center-locking 20-inch wheels in front and massive 21-inch wheels in the back. Another interesting design touch is the periscope-mounted center mirror, situated in the center of the car, offsetting the twin rollhoops behind the driver and passenger.
The stylistic excesses ensure that the J doesn't hit the same 347 km/h top speed as the regular car, simply because it is nowhere near as streamlined. Then again, that's probably a good thing, because the Aventador J is a production model, which means that some unlucky owner will someday try to drive it at full speed without his helmet on. The resulting lawsuits over permanent facial deformation will not be pretty.
If you have a whole truckload of money sitting idle, the Aventador J may just be the wildest supercar available. If you don't, you can go to the 2012 Geneva Auto Show to drool over it. Don't worry, the Carbonskin seats are supposed to be waterproof.