The German press is reporting this morning that there's been an explosion at Porsche's factory in Stuttgart where the 911 and many of its variants are built. Apparently a furnace used for drying coating sheaths was the source of the boom, which set off the sprinkler systems and ground 911 production to a halt. Reports say production will be down at least 2 - 3 days, which means Porsche could lose about 320 to 480 units of production, not to mention the cost of damage to property. Fortunately, there were no fatalities, but two Porsche workers were hospitalized with injuries. As to why the furnace blew up, the cause is unknown at this time.Automotive News confirms that the explosion happened at Porsche's spray-painting facility in Zuffenhausen, Germany.[Source: Autobild.de , Photo by MICHAEL LATZ/AFP/Getty]