South Africans again bought fewer new vehicles in February because of high interest rates, official data showed on Tuesday, but demand is expected to pick up in the second half of 2003, Reuters reported. The National Association of Automobile Manufacturers of South Africa (Naamsa) said sales fell by an annual 8.6% to 27,650 units in February. Compared to January, sales were down 13.2% as February had fewer selling days.