The 912 was also made in a special version for the German autobahn police (polizei); the 100,000th Porsche car was a 912 Targa for the police of Baden-Württemberg, the home state of Porsche. In the April 1967 edition, the Porsche factory's Christophorus Magazine noted: "On 21 December 1966, Porsche celebrated a particularly proud anniversary. The 100,000th Porsche, a 912 Targa outfitted for the police, was delivered." Porsche executives decided that after the 1969 model year, continuation of 912 production would not be viable, due to both internal and external factors. First, production facilities used for the 912 were reallocated to a new 914-6, a six-cylinder high performance version of the Porsche 914, Porsche-Volkswagen joint effort vehicle. Second, the 911 platform had returned to Porsche's traditional three performance-level ladder, including a most powerful 911S, a fuel-injected 911E, and a base model 911T, with pricing largely in line with market expectations. Third, more stringent United States engine emission control regulations also had a bearing on the decision; Ferry Porsche stated "It would have taken some trouble to prepare the 912 for the new exhaust rules, and with the arrival of the 914 we would have had three different engines to keep current. That was too many."