Derivative design benefits vehicle system development as a vehicle product typically has a large number of variations. To ensure high-integrity control of a vehicle system, the software for control derivatives must be developed consistently and trustfully across the product variations. Model transformation is a promising technology to support such software development. In this paper, we present our study of using a research model transformation tool GReAT in the software development of an enhanced cruise control system. Our results showed that current model transformation techniques partially meet the model transformation needs of high-integrity, derivative control software development. Further research is required to provide capability such as analysis integration and instance-directed rule executions.