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Audi A3 g-tron revealed

Audi has revealed the A3 g-tron Sportback ahead of the Geneva Motor Show, an A3 that runs on Compressed Natural Gas (CNG) and petrol. The A3 g-tron is powered by a tweaked version of Audi’s 1.4 litre TSI petrol engine which can run on both -gas and petrol, with the A3 g-tron normally using the petrol just for start-up and switching over to e-gas as soon as it’s running. Audi has provided two fillers under a common fuel flap – one for e-gas and one for petrol – with the A3 g-tron producing a total of 108bhp with the dual-fuel setup, enough to power the A3 g-tron to 62mph in 11 seconds.

Vauxhall launches speed limit detectors on Insignia (2008)

By Tim Pollard First Official Pictures 19 June 2008 07:53 Vauxhall's new Insignia will be the first of a wave of cars to have a forward-facing camera that can read road signs. The optional kit will detect speed limit and no overtaking signs – and flash up a reminder to the driver on the dashboard.GM calls the tech, which will be launched in early 2009, Traffic Sign Recognition and it uses a small, wide-angled camera system supplied by Hella. It sits at the top of the windscreen near the rain sensors and rear-view mirror, scanning the road ahead taking 30 photos per second.It's 1984 all over again...With a range of 100 metres, the camera focuses on circular patterns and then interprets the numbers inside by contour comparison; if a match is found on the software's database, that road sign will be flashed up in the driver's binnacle.The front-facing camera is also used as a lane departure warning system, alerting the driver if they unintentionally swerve out of their lane on a motorway.Cars with cameras: a growing trendMore and more manufacturers are fitting cameras to their cars nowadays and you can expect a flood of systems like the Insignia's to be launched in 2009, including the new BMW 5-series.CAR tried out these new systems on Bosch prototypes in 2007.

Enthusiast 3D prints an Aston Martin DB4

New Zealand enthusiast Ivan Sentch is in the process of 3D printing a 1961 Aston Martin DB4. Engadget reports that he bought a $499 Solidoodle 3D printer and has been working on this project since December 2012. Using a Nissan Skyline as a donor car, he'll make a fiberglass mold of the print and hopefully transform this thing into a drivable, street-legal car for a fraction of the cost of an authentic DB4.