Lamborghini officially unveiled the Aventador J at the 2012 Geneva Motor Show. The roofless and windowless concept car uses the same V12 engine as the standard Aventador, producing 700hp for a top speed of 186mph managed through a lightweight seven-speed automated transmission. The car does not have air conditioning or radio to save further weight for a total of 3,472 pounds (1,575kg).
The car presented at the Geneva show was the only unit to be produced, and was sold for $2.8 million. The car was specially made for a close relation.
The J label was thought to have come from Appendix J in the FIA manual that describes the technical specifications of race cars. However, during an interview with designer Filippo Perini, it was revealed that the ‘J’ actually stands for Jota, in reference to a 1970s one off Lamborghini Miura Jota, which also conformed to the FIA’s Appendix J regulations.
The extensive use of bare carbon fibre has kept the weight to a minimum The KTM X-Bow Superlight is one of the variants of the KTM X-Bow model range. As the name suggests the Superlight is the lightest model in the range - but not by much, the base model KTM X-Bow is just 5 kg (11 lbs) heavier. Although the Superlight is a full 40 kg (88 lbs) lighter than the GT4 version. The weight reductions to the KTM X-Bow Superlight have been made possible through the extensive use of carbon fibre. The monocoque structure with integrated crash protection is composed entirely of carbon fibre and left unpainted to show of the carbon fibre weave. The few body panels which are fitted to the X-Bow Superlight are also formed from carbon fibre. Additional weight savings were also achieved through the use of unique light-alloy wheels finished in a dark lacquer. Powering the KTM X-Bow Superlight is the same Audi-sourced 2.0 litre turbocharged engine found in all the X-Bow models. This engine puts out 24...