BeachLeaf wrote:
That is, is there a notable difference from going 55 MPH vs. 65 MPH when considering distance?

Mark

~ 20%. Is that 'notable' ?:

Aero drag is 0.5 * Rho * Cd * A * v * v

For the 24 kWh LEAF,

CdA * Rho * 0.5 = 0.725 * 0.6125 = 0.44

Air drag at each speed:

55 mph = 24.6 m/s. At 55 mph there are 24.6 * 24.6 * 0.44 = 266 Newtons of air drag

65 mph = 29 m/s. At 65 mph there are 29 * 29 *0.44 = 370 Newtons of air drag

--> 370 - 266 = 104 Newtons difference. Over one km that is 104*1000 = 104k joules/km = 29 Wh/km. Or 46 Wh/mile.

Or perhaps more useful, 4.6 kWh more energy to the wheels per 100 miles. That would be ~ 4.6/0.87 = 5.3 kWh more battery energy