Looks nice. What's the range impact of that cargo box?
Around 10%. The biggest range killer for my ski trips is elevation change, then snow/ice then the box. I did a test run on a flat highway with no snow and the box at 65mph. The average for 43.4 miles was 337 Wh/mi. Rated on my 2012 P85 is 300 Wh/mi.