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

Alarming number of drivers lack road sign knowledge

A THIRD OF DRIVERS in the UK do not know even the most basic road signs such as the National Speed Limit and Slippery Road warnings. This is the finding of a survey by More Than, which found that 34% of drivers in the UK did not know what the National Speed Limit sign was. The Slippery Road sign was misunderstood by one in seven drivers as meaning ‘paint on the road.’ With research conducted alongside 29 police forces, the survey found 20% of UK drivers had received penalty points for speeding in the past 10 years.

One Lap of the Web: Jay Leno does the T-REX, Porsche 912 restoration and cars with swimming pools

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- Watch as Jay Leno explores the 2013 Campagna Motors T-REX, a three-wheel, street-legal motorcycle that is insanely fast, especially since one of the powertrain options is a six-cylinder BMW engine and the thing weighs practically nothing.

Mercedes-Benz to cut production time, halve number of vehicle architectures

Mercedes-Benz is restructuring its global production network to cut the average production time for its models to 30 hours by 2015 from 43 in 2008. "We have increased productivity by 2 percent a year over the last few years. We will be accelerating our productivity efforts," Mercedes production boss Wolfgang Bernhard said during an investor conference that was part of the automaker's plant opening in Kecskemet, Hungary, on Thursday.