With the market for convertibles nearly halving since 2007, Holger Engelmann, CEO of German roof specialist Webasto, believes consolidation looms for the sector, which he believes will leave just two major players in the market. Despite this, he remains bullish about long-term prospects for the roof business and foresees potential growth opportunities in China. He spoke with Klaus-Dieter Floerecke, a reporter at Automotive News Europe sister publication Automobilwoche.