Previously, VW was set to purchase a 42-percent stake in Porsche, paving the way for a full-blown merger. Today, the company announced it would increase the stake to 49.9 percent. Accordingly, the cost of the transaction has increased from $4.9 billion to $5.8 billion. According to a release from Volkswagen, the revised purchase was triggered because “projects identified for a closer cooperation have been making swifter progress than initially anticipated.”