Figure presents the charge usage scores for assertive and defensive drivers across three terrain conditions -uphill, downhill, and flat terrain. Assertive drivers consistently exhibit higher charge consumption across all terrain types compared to defensive drivers (Supplementary figure ). Specifically, for uphill terrain, assertive drivers have a median charge usage score of 82%, while defensive drivers have a slightly lower median of 77%, reflecting the increased energy demand required to climb against gravitational forces. On flat terrain, assertive drivers exhibit a median charge usage of 81%, compared to 78% for defensive drivers. The downhill terrain yields significantly lower charge usage, with median scores of 77% for assertive drivers and 72% for defensive drivers, as gravitational pull reduces the need for acceleration.