2003 Suzuki Gsx-r750 Stock Muffler on 2040-parts.com

The skyscraper designed by Porsche

How much do you love your car? Enough to want to park it inside your house every night? Well here's some good news - thanks to a new super-luxurious Porsche Design Tower in the United States, your dreams can come true.

BMW X4 Leaks

We have the first official photos of the BMW X4 SUV – the ‘Lifestyle’ version of the X3 – which we expect to debut at the Shanghai Motor Show this month. We have the first leaked images of the X4 that show a BMW X3 with the same sort of treatment as the X5 got to turn it in to the X6, and create what BMW like to call an SAC – a Sports Activity Coupe. Apart from the changes to the body – and less room in the back – you can expect the X4 to offer much the same under the skin as the X3 – albeit at a premium price – which will mean – for the UK at least – will mean everything from an X4 xDrive 18d SE through to an X4 xDrive 35d M Sport.

The thinking man’s M3: Alpina D3 Bi-Turbo is world’s fastest diesel production car

German tuning firm Alpina has been tweaking BMWs since it started back in 1965 – in fact, it helped BMW develop the legendary 3.0 CSL, so it seems it knows its onions. However, its latest effort is something a little different. Not quite a conventional performance car, the 2013 Alpina D3 Bi-Turbo is actually the world’s fastest diesel production car, according to the firm.