I checked, 45 minutes every 4.5h, from rated capacity you're getting 360km out of a 40m charge. 4.5h at 90km/h is 400km, so you're losing 40km (90 at 100km/h, ignoring efficiency) range every 4.5h, vaguely. Pretty cool! Assuming the rated capacity is vaguely correct for long haul driving.