In the late 1960s, Opel ventured onto the race track for the first time since before the Second World War. Its entry, nicknamed the "Black Widow" left Porsches in the dust. But one day, it vanished - probably stolen from the courtyard of team leader and former Opel dealer Kurt Bergmann. Now, the Opel Classic department has produced a replica of the famous Black Widow. Drive It! had a look.