The most efficient freeway speed for a BEV varies depending on the model and the driving conditions. The general consensus is that the energy efficiency starts going down fast at higher speeds as the electric motor's power requirements keep going up. Where can we find a right balance of speed vs efficiency? Today, my wife and I took a ride on my 2023 Tesla MYLR7 at a constant speed of 45 miles per hour. I know, it sounds strange, but yes we did. It was a fun drive, and this largely flat stretch of the freeway was posted at 55 mph. So we were able to legally do 45 mph (The minimum speed on freeways is typically 15 mph below the posted speed limit). We drove a 30 mile stretch at 45 mph. My energy consumption was averaging around 165 wh/mile in the Tesla energy application. At this rate of energy consumption, I averaged out my range mileage data points and came to a total range estimate of about 470 miles. Now, if all other variables of driving dynamics were constant, I'm curious to find out how the range is affected by the vehicle speed. Has anyone compiled a spreadsheet and chartered a graph of their MY/3 at various constant speeds (45, 55, 65,or 75 mph) versus range? Or, we can crowd source it on the TMC forum right here, and report it on this thread. Any MY/3 volunteers?