Yeah that is true I mean you could probably do all white tape and stuff wouldn't be too bad it's actually pretty descrete some people don't even notice until I point it out. We'll I only tested by comparison of with or without but noticed I was getting around 10-20km more my leaf has a low soh at around 63%soh so when I first got it I could only do around 70km/43miles to about 30% battery on leaf spy then I pumped tyres from 32psi to around 41psi removed rear seats and was then getting around 80km/49miles to 30% then the aero mods and could get 90km/56miles to 30% doing the same route mostly highway and some residential driving. I can feel the difference at speed the car seems to cut through the wind easier I feel less of those pushing wind moments when I first got the car the highway would absolutely kill its speed needing more throttle, whereas now it seems to glide alot easier if that makes sense. I've taken passengers who own same model leaf and they even notice from passenger seat.