On MID Cars for individuals:

"The SAF works on a chain of command. Soldiers, airmen and sailors look up to their commanders for inspiration and direction. SAF commanders need to lead, inspire, direct and discipline their men. Commanders need to move among their troops frequently and they have to be seen and heard by their troops. The commander's presence must be felt by the troops. This command presence is an important element in a military chain of command. At all times, the SAF also require key commanders to be able to return to camp or to be present at the site of an emergency quickly.

For these reasons, selected officers are given the use of staff cars, depending on rank and appointment. An easily identifiable car helps to communicate the commander's presence. The presence of the car informs the troops that their commander is now with them even as their carry out their training and operational duties. "

...