Has anyone ever attempted to model a cargo box in EV Trip Planner? It seems to me best approach would be to add additional wind to the equation. The question would be how much wind to add. I just picked up a Thule Motion XT XL Limited (new to the market) which is supposed to be more aerodynamic than all their older boxes. I was thinking of going with +15 mph, but would love to hear thoughts on whether that is too much or not enough. Thanks!