What full German mechanization before World War I would cost

What if Germany mechanized so completely before World War I that its army no longer needed horses?

The industrial and fuel investment would be enormous, probably delaying war and forcing Germany to sacrifice much of the High Seas Fleet program.

Replacing horses throughout the army would include the transport system as well as combat units. Producing enough motor vehicles would require a major commitment of money and manufacturing, leaving little room for the High Seas Fleet. The time required could also delay the war. Clarke favors diesel because he considers the available oil easier to turn into diesel fuel than petrol. Other participants question whether suitable diesel engines could supply enough power, while he replies that the scenario does not require fast vehicles. The feasibility of the machinery remains disputed.