Toyota Crown 2004 Multi Monitor [1461300] on 2040-parts.com

Mayor warning over London cycling protests

SAFETY protests sparked by the deaths of six cyclists on the streets of the capital risk scaring people off switching from cars to bikes altogether, London mayor Boris Johnson will warn today. Mr Johnson will urge "more careful" language, suggesting pro-cycling campaigners could jeopardise the push to boost bike use by concentrating on recent fatalities when overall numbers were not up. Mr Johnson - addressing a safety summit bringing together cycle and haulage groups - will hail a £913 million investment in safety measures but urge people not to expect instant results.

New Porsche 911 GT3 (991) technical highlights (video)

Ahead of its arrival with customers, Porsche has delivered a new video of the GT3 designed to make it clear just how some of its technical highlights work to make the GT3 swifter and more nimble than ever before. Power is of course the key to the GT3 – 468bhp and 324lb/ft of torque – but the power is no good unless the GT3 can put that power down as efficiently as possible in all circumstances. Porsche assert that the GT3′s chassis is engineered for Motorsport, and key elements of the new GT3 make it even more able.

Audi readies flagship Sport Quattro concept for Frankfurt

Audi will unveil its new Sport Quattro concept at next month's Frankfurt motor show, previewed in a number of sketches. We first saw the Quattro concept back in 2010 at the Paris motor show and three years later the carmaker has produced another iteration, a 2+2 coupé, that measures in at 4,699mm – 419mm longer than the Quattro concept (4,280mm). From what the sketches show, the Sport Quattro retains the chunky C-pillar of the 2010 Quattro concept, the 1984 Sport Quattro and the original Ur-Quattro models, while the four headlamp units are another nod to the original.