Jaguar Cylinder Head No Stamp Vintage Motor Engine on 2040-parts.com

Audi, Bugatti factories are detailed in cable TV shows

Fans of the Audi R8 and Bugatti Veyron sports cars--a group that includes all of us here at AutoWeek--have the chance on Monday night to go behind the scenes and see how these road rockets are built. The National Geographic Channel, available on cable and satellite TV systems, tells all about the Audi R8 on an episode of Ultimate Factories that airs at 10 p.m. Eastern.

Ferrari LaFerrari vs McLaren P1: the stats and specs battle

Arch rivals Ferrari and McLaren have both revealed their new hypercars at the 2013 Geneva motor show today. Both produce over 900bhp and 650lb ft, hit 62mph in under three seconds, top 217mph, and cost nearly £1m. When we drive both cars in the coming months their different characters will no doubt be revealed, but for now here's how the pair match up head-to-head...

New Vauxhall VXR8 GTS gets 576bhp & costs £54,999

The new Vauxhall VXR8 GTS gets 576bhp If you’re going to make your most potent saloon car more powerful, you could just tweak the engine management a bit to add a few more horses. But Vauxhall have gone a bit further with the latest VXR8 GTS – it gets a 6.2 litre V8 from the Camaro ZL1, a whole 150bhp and 140lb/ft of torque than the old VXR8. Vauxhall has based the GTS on Holden’s new GEN-F GTS – Australia’s maddest production Holden – and the increase in power comes courtesy of a supercharger, new exhaust system.