A Toyota patent is designed to detect whether a vehicle passenger is experiencing motion sickness by comparing vehicle movement with head movement measured by a radar sensor. The system then activates "mitigation control," according to the abstract. The inventors are John D. Harkleroad (Ypsilanti, Michigan) and Vasudeva S. Murthy (Ann Arbor, Michigan), with Toyota Motor Engineering & Manufacturing North America Inc. in Plano as the assignee. [Composite illustration: Sources, U.S. Patent No. 12589769, Fig. 4A; DI Studio]