The speed bit? Relatively easy, given some tasty suspension modifications, a nifty water-injection system that raises power from 431PS/425bhp to 500ps/493bhp and a Nurburgring lap time to trouble the very fastest GT3-branded Porsche 911s. Stripped, caged, leaner and meaner it all sounds good until you see it, the aftermarket look bolt-on rear wing and 'Acid Orange' wheels making a price tag double that of the M4 seem even more ludicrous.
But as a driving machine I love it. I also love the previous M3 GTS, which followed a similar format but was arguably even more raw and outrageous. And very, very orange. With the previous M3's gorgeous naturally-aspirated V8 stroked out from a 4.0-litre to a 4.4 and power increasing from 414bhp (420PS) to 444bhp (450PS) with no compromise in the high-revving nature – the redline is 8,300rpm – it makes one hell of a noise through its titanium exhausts. Like for like it also weighs as much as 125kg less than an equivalent M3 coupe. What could possibly be cooler than that?
Let me tell you! A practical four-door M3 saloon of the same generation in discreet matt silver, built in even smaller numbers (just 67 to the GTS's 150) and fitted with the same stroked 444bhp (450PS), 4.4-litre engine, uprated suspension bits and a 70kg weight saving over a standard M3 saloon. This thanks to a host of parts made from CFRP (carbon fibre reinforced plastic) to showcase BMW's investment in productionised carbon fibre. Tech brought to the (relative) mainstream in the i3 and i8 and now the new 7 Series too. Interesting cars all. None as cool as this.