PSA Peugeot Citroen said on Thursday it was investing €1.12 billion ($US1.35 billion) on its latest large saloon model, the Peugeot 407, which it plans to launch in the spring, a Reuters report said. According to the report, PSA said it aimed to sell 300,000 of the new cars annually from 2005, its first full year of production, which would beat sales of the 406 predecessor which sold 260,000 in its best year.