Jaguar has flourished in recent years as new models have sent volume upwards. More new product is on the way with the F-type sports car and replacements for the XJ and XK ranges. There is also a growing self-confidence about the company now, typified by the R Coupe concept showing at the IAA Frankfurt Motor Show this week. Dave Leggett caught up with Jaguar's Managing Director, Jonathan Browning, in Frankfurt.