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

Caterham 620R (2013) first official pictures

Caterham will launch its most hardcore road-going Seven ever at the 2013 Goodwood motor show. Called the 620R, the new range-topper develops 310bhp, and will hit 60mph in 2.79sec, making as fast as an a 691bhp Lamborghini Aventador. The 620R replaces the R500 in Caterham's range, and costs £49,995.

BMW Motorrad Concept 6 (2009) unveiled

Yes, we know this BMW is a pair of wheels short of CAR Online’s usual offerings, but we couldn’t resist giving some space to this stunning straight six-powered BMW sports bike concept. Yes, you read that right - the BMW Concept 6 has a 1600cc straight six slung across the frame. Honda tried something similar for the CBX1000 in the 1970s but the idea never really caught on even if the true width increase over a contemporary four wasn’t as huge as your eyes would have you believe.

Audi A6 allroad 3.0 TDI is the five millionth Audi with quattro 4WD

The first Audi qauttro hit the headlines in 1980 and now – 33 years later – Audi has produced its five millionth car with AWD – an A6 Allroad. It’s thirty years since Audi became the first mainstream car maker to offer a four wheel drive road car when the Audi quattro hit the road, offering a (certainly for then) fulsome 200PS with the added reassurance of four wheel drive for added grip. True, others had flirted with 4WD road cars before Audi made it mainstream, such as Jensen with the FF in the 1960s, but Audi’s bold move was a real first for a mainstream maker, even if the Audi quattro was not exactly an entry-level model.