Because the Zero S is working harder to drag this stuff through the air, it stands to reason that highway range will suffer—I don’t know how much until I run some baseline tests without the pieces. Also, the motor runs notably hotter. On my most recent morning commute, I could get the high-temp warning to come on after about 20 minutes of running a steady 80 mph on relatively flat ground. And by the end of my commute, the light went from blinking (just a, “hey, we’re getting a little hot down here” warning) to solid (“okay, I’m gonna start cutting power if you don’t knock it off”). The Zero never actually started to trim back power, though.