Here's the translation from CB's link.
Long before the start of series production of the first armored fighting German High Command has initiated the construction of a sufficiently large training "armored vehicles" series made on the car chassis Adler "Standart-6". These machines are equipped with a 6-cylinder petrol engines with capacity of 50-60 hp and 4-speed transmission. If modifications are made to the training armored vehicle normal body shot, and its place established sham "hulls" (various designs), made of plywood or normal metal. Almost all cars have a tower, but more often it is performed purely visual function. Arming usually absent. In addition, passenger chassis often used for the manufacture of self-propelled tanks layouts.
The number of rearranged so "Adler" is still not clarified, but it may well go on a few hundred machines. Their production has been launched in 1929 (?) And lasted for two years, until the arrival of armored reconnaissance and connected Kfz.13 and Kfz.14, performed on the same chassis.
