Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

'Drivers determine cycling safety'

HIGH-VIS clothing on cyclists does not deter drivers from performing the "most dangerous" overtakes, scientists say. Between 1% and 2% of drivers pass "dangerously close" to cyclists when overtaking, regardless of what they are wearing, a study found. The average gap left by a driver overtaking a cyclist has shrunk over the past few decades from 179cm in 1979 to 118cm in 2013.

Alfa Romeo 4C in action at the Goodwood Festival of Speed (video)

The Alfa Romeo 4C made its dynamic debut (pictured) at the 2013 Goodwood Festival of Speed The long awaited Alfa Romeo 4C finally made its debut in production spec at the Geneva Motor Show in March, and at the weekend the 4C made its dynamic debut at the Goodwood Festival of Speed. To make sure the 4C made as big an impact as possible at Goodwood, we’d expected Alfa to run up the hillclimb in the launch edition 4C, which gets plenty of extra goodies including a carbon fibre body kit and spoiler, but this 4C looked to be a standard model. But even though we’d like to have seen the launch edition with its extra carbon fibre goodies, the standard car gets exactly the same 1750cc 4-cylinder petrol engine with enough get up and go, 236bhp, to move the lightweight 4C (under 900kg) to 62mph in just 4.5 seconds.

Chevy will use World Series to pitch Volt's debut

Chevrolet will use next month's World Series to launch ads for the debut of the Volt plug-in hybrid sedan, General Motors Co.'s marketing chief Joel Ewanick said. The ads will be part of a broad campaign that Chevrolet will initiate during Major League Baseball's fall classic and run throughout autumn, said Ewanick, who spoke on the sidelines of the Rainbow PUSH auto summit in Detroit. Ewanick declined to give details of the Volt commercials or the broader Chevrolet campaign.