(Reuters) – British car production rose for a fourth straight month in August, compared with a year earlier, although record input costs cast a shadow over the sectors’ recovery, the Society of Motor Manufacturers and Traders (SMMT) said on Thursday. The industry body warned that almost seven in 10 of its members have expressed concern about future business operations as they fret over rising energy bills. The SMMT welcomed the UK government’s decision to cap prices of energy for businesses over the winter but said costs are expected to more than double again next year, with some manufacturers…