Ground vehicles are increasingly designed to incorporate autonomous control for better performance, control and efficiency. Such control is particularly critical for military logistics vehicles where drivers are carrying sensitive loads through potentially threatening routes. It is imperative therefore to evaluate what role does autonomy play to help safety, and whether drivers trust autonomous control. In this paper we investigate the use of semiautonomous vehicles used for military logistics and carry out human factors analysis to reflect on trust and safety issues that emerge from the driving of such vehicles.