Emerging in-vehicle systems have turned the contemporary car into a human-computer interaction context that has its own set of rules and challenges. Interacting with in-vehicle systems while driving a car can greatly affect the driving performance and have been shown to be the cause of many road accidents. Evaluation of in-vehicle systems is a subject of much interest to developers and researchers. One of the major issues is how to evaluate; is there added value in taking your evaluation on the road or is simulated driving sufficient? This paper examines differences and similarities between taking in-vehicle systems to a track or to the laboratory by investigating the results (and costs associated) from two driving settings for in-vehicle systems evaluation; one on a test track and one using a lightweight driving simulator. Our results show that the two settings do seem to lead to a number of similar results. However, our results indicated that controlled driving yield more frequent a...