Given how a roadster looks completely at home on
the sunny coastal roads of California, it came as no surprise when BMW unveiled the Z4 Concept at this year's Pebble Beach Concours d'Elegance.
The distractions of
sunny skies and
coastal scenery make it possible to be surprised by decreasing - radius curves with blind entrances, gravel scattered over the pavement, or the light, greasy glaze of sea mist lying down on the oil that rises to the surface from deep inside the
road.