Tank
With World War II the multi-turreted tanks proved impracticable, and as the single turret on a low hull design became standard, crews became standardized around a crew of four or five. In those tanks with a fifth crew member, usually three were located in the turret (as described above) while the fifth was most often seated in the hull next to the driver, and operated the hull machine gun in addition to acting as a co-driver or radio operator. Well-designed crew stations, giving proper considerations to comfort and ergonomics, are an important factor in the combat effectiveness of a tank, as it limits fatigue and speeds up individual actions.
Praga RV
Praga RV engine had a cylinders work volume of 3468cc and supplied at 2600rpm. The fuel consumption was up to 35 liters per 100 km. The car had 3 axles, of which both back axles were driven. It had 4 gears and 1 reverse gear. The truck was rated for 2000 kg payload. The Praga RV was capable to travel at speed for 390 km without refueling of 137 liters fuel tank. When carrying infantry, typical capacity was 8-12 men, 7-11 in trunk and one in cabin besides driver. Also, it was capable to pull the 3-ton trailer. With trailer, Praga RV fuel consumption do increase to 49 liters per 100 km.