The BMW XM. The first dedicated M car since the first M car. That was the M1, of course, and the M1 and the XM have many things in common. For example, they are both low, sleek and achingly gorgeous supercars. And if this were a video review, that’s the point you’d hear a loud scratching noise; the sound of a stylus being dragged across vinyl indicating the sudden cut to reality. As this isn’t a video review, I’ll just say it straight: the XM may share the M1’s design feature of two roundels on its rear – at the top of the rear screen if you haven't spotted them – but low, sleek and achingly gorgeous it ain’t.