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

Infiniti Q30 concept (2013) at Frankfurt motor show

We’ve seen the design sketch of the new Infiniti Q30, and now here’s the first picture of the idea made real: it’s the Q30 concept car that’ll attend the Frankfurt motor show in September. Infiniti Q30 concept: what’s the story? Infiniti is busting three niches in one with the Q30: we’re told the car’s body is a fusion ‘merging the dynamic design and sportiness of a coupe, the roominess of a hatch and the higher stance of a crossover’.

Opel/Vauxhall teases Cascada mid-size convertible

Opel/Vauxhall has given us a sneak peek of its new mid-size convertible, the Cascanda, which effectively replaces the Astra Twin Top. The Cascanda features a full-size fabric roof that can be opened or closed with one button up to speeds of 30mph and is the latest model to shun a folding hardtop in favor of the lighter and more practical soft option. The company claims this is its first D-segment cabrio for more than 70 years but, unlike them, we haven't forgotten the Cavialier Convertible of the 1980s (see pic).

Jaguar C-X17 concept (2013) full details on new aluminium chassis

Jaguar’s C-X17 crossover concept might have show-stopping looks, but it’s what will lie beneath the production crossover – thought to be called QX – that’s just as intriguing: an all-new aluminium platform, dubbed ‘iQ Al’. It’s a clean-sheet design, with double-wishbone suspension up front, and a multi-link axle at the rear. For more unseen location photos and an in-depth feature, pick up the October issue of CAR magazine, out Wednesday 18 September   Jaguar C-X17 crossover concept: the lowdown on the ‘iQ Al’ aluminium platform ‘It had to be a clean-sheet design to reach our goals,’ says Jaguar vehicle line director Kevin Stride.