PUZZLED by the sudden influx of gleaming new Ferraris roaring around Repulse Bay, Keeping Posted has been fielding one or two anxious inquiries as to whether this salubrious part of town is being turned into a race track. In fact, we might even be responsible for this burst of speed on the curving roads, our investigations revealing this to be an adventure organised by the private banking arm of Creditanstalt for the benefit of its favoured customers. Readers may recall a Keeping Posted item some weeks back when we told how Creditanstalt borrowed $500 million worth of jewellery from Christie's and invited a handful of their valued female clients to play with the treasured trinkets over dinner. Naturally, having read our piece, some of the male customers of the bank rightly felt that a reciprocal gesture was very much in order. Rising to the occasion, executive vice president Paul Giles, with the help of Andrew Turner of Italian Motors, organised the speedfest to give them a chance to sit at the wheel of a sleek Ferrari and check the testosterone levels. Banker Giles himself, our informant posted along Shouson Hill tells us, was spotted cruising along in a black Mondial convertible with a shapely female companion occupying the navigator's seat. Before anyone's imagination goes on overdrive, we must add that the diligent banker was probably doing nothing more than offering the pretty lass some timely financial advice.