Franz-Josef Kortüm has pushed German supplier Webasto to become a leader in roof systems in Europe.
Since starting with the company in 1994 and becoming chairman in 1999, he has proved he isn't afraid to take risks.
In February 2002, Webasto formed a joint venture called Open Air Systems (Oasys) with Italian coachbuilder Pininfarina to develop and produce roof systems.
Oasys has won several big contracts, including roof systems for the Daihatsu Copen and Mini cabriolet. It hopes to grow annual revenues to E300 million by 2006.
Kortüm, a former Audi CEO, is a firm believer that demand for more sophisticated roofing systems will grow further. He says: "The time that many people thought air conditioning could replace sliding roofs is long gone."