Volkswagen's (VLKAY) high-end Audi division could stop production early next year if sales in Europe continue to lag. Luxury apparel and accessory brands have fared well during the recession as wealthy consumers still made small splurges. But as the economic downturn -- especially in Europe -- continues, even the wealthy have stopped purchasing larger-ticket items like cars. Trouble is already brewing at Audi. The German carmaker has shut its