Cars like the Peugeot 607 have a tendency to raise eyebrows outside of France. The underlying assumption is that while the French makers can competently build and market small- and medium-sized cars, they would be well advised to leave upmarket cars to better qualified others. But PSA Peugeot Citroën has decided that it cannot afford to stay out of large cars and that it needs a coherent manufacturing strategy for the sector. Rob Golding found out more on a visit to PSA's designated large car plant at Rennes.