sentences:  Two German representatives observed the testing of M-04 and were impressed by its maneuverability.According to Mark Axworthy, it was a German Lieutenant-Colonel by the name of Ventz who, in May 1944, admitted that the Hetzer was created along the lines of the Mareșal.The final series of prototypes, M-05 and M-06, were built in the spring of 1944 and gave up on the T-60 chassis and hull in favor of a new Romanian design.