if you sit at 60 you might make it in summer. i’d expect 260/70. use the speed controller to follow cars in front etc and have the regen down at min for motorway driving. that way it freewheels a lot.
if you know of a charger on the trip maybe stop for a refreshment/rest and give it a short charge while resting. will make all difference. obviously youll need a recharger where your going
Current Car: Hyundai Kona Premium EV...2 way 40kg hoist
Last Car: Toyota C-HR Excel Hybrid...4 way 80kg hoist