If you can begin with a full charge at the top of a mountain and then recharge down in the valley 200 kms later, you could probably set a new all time record
Our best, 98 miles RR, was achieved exactly in this way. We were camping, driving down some pretty big hills for the last portion of our drive. After charging up, the iMiev calculated that at that same rate of consumption, we could have driven 98 miles on a full charge.
But, on that trip, where we stretched the iMiev pretty well, we didn't have any single leg more than 60 miles. Do we have a thread somewhere of longest trip on a single charge? I guess there should be "point to point" and "round-trip" categories for this, since, as Don says, alohart could start at the top of Haleakala
with a full charge (assuming he could get one up there) and kick the snot out of any of the rest of our single point to point trip distances.