By Nick Carey LONDON (Reuters) – British luxury carmaker Bentley on Friday reported an 11% drop in vehicle sales for 2023 as high-end consumers felt the pinch of rising costs and slowing economies, with sales down in its top three markets – Europe, the Americas and China. “The luxury market was not immune from the challenging market conditions seen around the world in the second half of 2023,” CEO Adrian Hallmark said in a statement. “We remain cautiously optimistic for the year ahead, with a continued robust global demand by market and model.” Bentley said that despite the overall sales decli…