Valmet Automotive is convinced that the variation of roof systems will grow, with new kinds of convertibles in car segments where we have seldom seen open tops before, like SUVs, crossovers, and the small vehicle segment. Continuing just-auto's series of interviews with leading roof manufacturers, Matthew Beecham talked with Hartwich Tiemeyer, Head of Design Engineering for Roof System, Valmet Automotive about convertible roof developments.