Move over Ferraris and Porsches, here come the custom cars

Coburg, Germany

MARTIN Kapp gestures towards the sleek red Italian sports car parked in his barn in the heart of Germany, secure in the knowledge there is not another exactly like it in the world.

By commissioning the 300kmh Alfa Romeo TZ 3 Corsa, the 63-year-old engineering company executive joined a band of custom car aficionados ranging from financiers to rock stars keen to acquire an exclusive exotic vehicle. Anecdotal evidence suggests they are a growing breed.

Advan…