Cars are increasingly equipped with technology that can be used to analyzedriver behavior and alertness, often referred to as driver monitoring systems(DMS). Although initially mainly used to track drivers' attention, DMS are nowexpanding in the hope of detecting additional forms of driver impairment thatmay jeopardize driving, such as drowsiness and those caused by sudden medicalemergencies. To explore the potential for the latter, we conducted a pilot studyto investigate whether technology in modern vehicles, such as eye tracking anddriving behavior sensing, can detect abnormalities during seizures. We included10 patients with focal epilepsy, all of whom had high seizure frequencies and ahistory of focal impaired awareness seizures. In three subjects, we recorded threedefinite and one possible electrographic seizure. All seizures were focal, with nomotor features. We evaluated driving performance, saccade frequency, eye blinkrate, and gaze direction. No clear impact of seizures on driving performance wasobserved, and eye-related measures showed inconsistent changes. Future stud-ies should explore additional indicators and assess the potential to detect moresevere seizures that may have a greater impact on driving performance.