The number of diverse and innovative technologies in the vehicles is increasing. Along with them the risk for driver distraction and inattention increase, and the development of good user interface assume progressively greater importance. The purpose of this study was to examine where the controls for adaptive cruise control (ACC) and flexible trip computer/driver information should be placed and how the controls should be designed in order to achieve good user interface. The work was done as an assignment for Volvo Car Corporation in Göteborg, Sweden. An information gathering phase started the study. Based on the collected theories and knowledge concepts were generated in order to evaluate drivers’ attitudes towards different placements and designs of controls. The evaluation results show that the most preferred placement for ACC controls is a lever, and steering wheel for trip computer/driver information controls. According to the movement expectations of the driver’s participating in the evaluation, the ACC should be activated, cancelled, resumed, and deactivated with a press on the top of the lever, towards the steering wheel column. A movement of the lever upward should increase the speed and a movement downward decrease the speed. The adjustment of time gap should be completed with movements forward and towards the driver or with a thumbwheel. If lever movements are applied, then movement forward should lead to a decrease of gap and towards the driver should increase it. Rotation of a thumbwheel upwards should increase the time gap, and rotation downwards should decrease the gap.