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

Opel/Vauxhall Cascada [w/gallery]

The Opel/Vauxhall Cascada effectively replaces the Astra Twin Top, but attempts to move the model upmarket as a separate product line. It has moved up a size to reflect its prestige aspirations: at 4,697 mm long and 1,840 mm wide, it's longer than an Audi A5. Like many of the latest generation of convertibles, the Cascada ditches a folding solid hardtop in favor of a lighter, more space-efficient and cheaper soft fabric set-up.

Koenigsegg One:1 preparing for Geneva & hosted by Christian von Koenigsegg (video)

Christian von Koenigsegg walks us round the new Koenigsegg One:1 The first sniff of the Koenigsegg One:1 came at the end of 2012 when Cars UK exclusively revealed the first details of Koenigsegg’s Megacar. It took more than a year for Christian von Koenigsegg and his intrepid team to complete the first car, but it was worth the wait. Probably the supercar star of the Geneva Motor Show earlier this month, the One:1 gets 1360 HP and weighs just 1360KG – the the world’s first 1:1 power to curb weight ratio supercar – and has 2G cornering ability and 610kg of downforce at 160mph thanks to active aerodynamics.

New Mazda3 to drive 9,300 miles from Hiroshima, Japan, to Frankfurt, Germany

The new Mazda3 (pictured) is trekking from Hiroshima to Frankfurt If you’re going to set a challenge for a new car, a drive from Hiroshima to Frankfurt – 9,300 miles – is probably one designed to show any flaws. And that’s exactly what Mazda are doing with the new Mazda3. The ‘Mazda Route3 – Hiroshima to Frankfurt Challenger Tour 2013′ will see eight new Mazda3s setting off from the Mazda factory in Hiroshima, heading for Russia, through Belarus and Poland before ending up in Frankfurt, Germany.