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

Mercedes-Benz B-Class

The rather unloved yet brilliantly packaged Mercedes B-Class will enter its second generation at next month's Frankfurt motor show. Gone, sadly, is the ingenious sandwich floor construction, replaced by a conventional front-drive platform. The result is a reduction in height by 48mm to 1557mm, while length has grown by 89mm and width by 11mm.

Ferrari F450 – due at Frankfurt in September ’09

Rendering of the Ferrari F450 - due to show at Frankfurt in September and go on sale in 2010 But the new Ferrari F450 is getting closer, and spy shots of the F450 have enabled Auto Express to come up with a rendering that is, we reckon, near as dammit to the finished article due to be shown at Frankfurt in September. Sporting a pair of big side vents that have been enlarged to help the engine breathe and the brakes cool, the F450 is different enough to the F430 to set it apart as a new car – not just an evolution. The F450 is going to have to go upmarket to compete with the likes of the Lamborghini Gallardo LP560-4, and in an effort to compete Ferrari has upped the capacity of the F430, increased the rev limit and produced an engine that, in the F450, should deliver something around 500bhp.

Lamborghini LP650-4 Roadster – in the wild

Lamborghini Murcielago LP650-4 Roadster at a motor event in the US We first got details on the new Lamborghini LP650-4 Roadster back in February, and Lamborghini subsequently issued a set of pictures to show it was real. But it was a bit of a surprise to see a real one turn up at a Lamborghini event in the US. Sporting the same 650bhp as the Lamborghini Reventon, the LP650-4 Roadster is the last of the line of open-topped Murcielagos (apart from the Reventon Roadster – which as there will only be 9 doesn’t really count), and is the successor to the LP640 Roadster.