Lamborghini Aventador J headlines at Geneva

The very latest thing in blow dryers - capable of styling your hair at 300km/h - is headlining the Italian action at the Geneva show.

The Lamborghini Aventador J is the natural development from the supercar company's existing super sports hero coupe, with the roof ripped away for extra driving enjoyment. It is a concept car at the show but should be ready for production and Australian deliveries in 2013.

The J-car is presented without a windscreen and with a periscope rear-view mirror at the show to add to its dramatic top-off look, but it shares its carbon fibre heart and jet fighter-inspired look with the Aventador coupe, as well as its 515 kiloWatt V12 engine and all-wheel drive system. The monocoque has been re-designed including two safety bars behind the seats.

For the show only, to cut weight below the 1575 kilos of the coupe, the car has also been stripped of its aircon and navigation system. "The Aventador J is the proof that, despite the rules, Lamborghini will always make people dream, even in the future," says Stephan Winkelmann, president of Automobili Lamborghini.

He says the company's designers went wild on the Aventador J, which he describes as "an absolute one-off: a one-of-a-kind piece of art".

The choice of Aventador J taps Lamborghini's past, as its Jota of 1970 was a one-off development of the Miura coupe with a different body and better performance. It is also linked to the motorsport classification of Appendix J, which sets the technical regulations for various racing classes.