I was working towards it.
With the following I'm assuming the Nissan Leaf has a full 24kW/h total capacity and an 80% efficient motor at it's maximum GVWR of 1902kg.
Air drag on an average day at sea level (but I'm at 7,800ft!) absorbs 8.45kW at 100kph/62mph.
I just guessed at an average rolling resistance being 130N or 3.61kW. Obviously road and tire conditions will dramatically change that.
The combination would be only 12,1kW (Not Bad imo!) and would be able to drive the Leaf 159km or 99mi at speeds of 100kph/62mph.
Ah, but the weight! Figuring initial acceleration (but isn't there an ending deceleration too that we're not accounting for?) it would consume 0.408kWh to reach 100kph/62mph, which knocks off about 5 km or 3mi of total usable distance to 155km or 96mi. But that's assuming you then maintain a steady speed after initial acceleration (no rock slides or avalanches to stop for).
However, here where I live I have to climb 1,310m/4,300ft (7,800ft to 11,000ft) up a mountain in order to get out of town. That would consume 7.2kW/h and put total distance to 99km/62mi (the top of the mountain is only 43 miles from here), which if I can make it to the top of the mountain, I can coast (or regen) down the other side to the next town and recharge there before heading to the big city. Sound's like it's actually possible.
The benefit of analizing every side to the whole story is that I can then figure out how to go about modding if I ever did get to it. For an example, I can see that if I shaved off the Cd to 0.19 by boat tailing and what-not then I'd gain 20 to 30 miles of range. Or if this planned route over the mountain with as little weight in the car as possible then I'd gain about 7 miles.