The BMW Z4 could well have been called the Z5. If it had followed the logic of the Z3 and Z4 that came before it, this new-generation model might well have adopted a new badge to accompany its new body, new chassis, new engines, new underpinnings and new technology. But it's not - it's still the Z4, but its very different, all the same.

Buying a sports car is a bit like getting a tattoo - it’s not a sensible, practical or necessary choice, it’s an emotional one, and, if we’re honest, the most important factor is that it looks good, and makes us look good. At least in our own eyes.

BMW has returned to the shooting brake arena with the Concept Touring Coupe, the latest in a long lineage of stylish wagons from the Bavarian brand.