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

Mercedes SL65 AMG (2012) first official pictures

If you're wondering why Mercedes is persisting with a twelve-cylinder SL in this downsizing era, understand this: the new 2012-spec SL65 AMG exists purely because many buyers at this end of the market demand more of everything. So a Mercedes SL65 AMG with a hulking bi-turbo 6.0-litre V12 has been launched for customers in China, the Middle East and other emerging markets, where millionaires are numerous and fuel prices less of an impediment to sizeable sales. Over here, we'll just ogle the price tag well into six figures and stick with the big-selling SL350 or SL500.

Mercedes E63 AMG S (2013) priced from £83,470

Mercedes has announced the hottest E-class you can buy, the E63 AMG S, will cost from £83,470 in the UK from June 2013. In uprated 'S' guise, the 577bhp/580lb ft exec saloon monster can only be ordered with 4Matic all-wheel drive in left-hand drive markets, but the UK gets only rear-drive cars. CAR has already tried the E63 AMG S in 4Matic form: click here for our full review.

Gibbs Sports Amphibians launches the Quadski

Gibbs Sports Amphibians has unveiled the Quadski, an amphibious all-terrain vehicle that, according to company founder Alan Gibbs, obliterates the distinction between land and water transportation. The 1,300-pound, 10.5-foot-long Quadski looks a bit like a jet-powered personal watercraft sitting on top of a single-seat ATV, but it's what's underneath the vehicle's molded composite body that separates the high-speed Quadski from larger, slower amphibious predecessors. The Quadski draws power from a BMW K 1300 Motorrad motorcycle engine capable of producing 175 hp.