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BMW 4-Series: Alpina B4 Biturbo price and specs – debuts at Goodwood

The Alpina B4 BiTurbo (pictured) debuts at Goodwood 2014 We’ve already had the arrival of the BMW 4-Series Coupe and Convertible – the replacement for the old 3-Series Coupe and Convertible – so logically the next step is an Alpina version. And here it is. The Alpina B4 Biturbo is based on the latest 4-Series and gets the N55 BMW straight six from the 435i but tweaked and fettled by Alpina to deliver 404bhp and 442lb/ft of torque.

McLaren P1 caught testing in Spain

We're still awaiting details about the McLaren P1—successor to the legendary McLaren F1—but we have a better idea what the supercar will look like courtesy of some new spy photos. McLaren officially unveiled the P1 at this year's Paris motor show. Its dramatic curves didn't disappoint.

Video: How DGT Architects created Renault's Paris show stand

The creators of the Renault stand at this year's Paris motor show have released a video explaining how they created one of the most popular show stands in recent years. The DGT Architects-designed Renault stand – named ‘The Bump' – was one of the stars of the show this year with its curves and lighting drawing praise and attracting admirers from across the event.  A total of 388 large squashed light globes that softly glowed a variety of colors were hung from the ceiling and simulated the movements of waves as they illuminated the stand below. To convey a sense of motion to the cars underneath, DGT used the movement of the lights and the creation of two hills.