Motoring: Petrol-head heaven

Petrol-heads know about Millbrook, the 720-acre Bedfordshire proving ground bought by Vauxhall in the 1960s for testing cars and now, still owned by General Motors, shared with other manufacturers and the military. The latter tests some fearsome off-road beasts there but the former confine themselves to road circuits. There’s no shortage: the straight mile, skidpans, a five-lane, two-mile bowl, a handling circuit, a hill circuit with corners that hurl you sideways, simulated narrow roads, potholed (i.e.,