{
 "model_version": "EV Range-Speed-Charging v1.66.xlsx",
 "exported": "2026-09-07",
 "eff_drivetrain": 0.912285,
 "eff_batt_charge": 0.9409,
 "rho_air": 1.167079666254815,
 "g": 9.807,
 "p_acc_W": 250,
 "detour_time_s": 300,
 "adj_default": 0.7,
 "p_acc_W_site": 650,
 "eff_ac_wall_to_pack": 0.864,
 "provenance": {
  "mass_kg": "US EPA test car list",
  "coastdown_lbf": "US EPA test car list",
  "epa_range_mi": "US EPA and DOE fuel economy guide",
  "adj_factor": "US EPA and DOE fuel economy guide",
  "usable_kWh": "computed from the EPA figures, or a published figure where sources.pack is entered",
  "aero": "maker specifications",
  "motors": "maker specifications",
  "delta_rot": "maker specifications",
  "charge_curve": "measured charging session, credited in curves[name].source"
 },
 "license": {
  "model": "GPL-3.0 \u2014 Copyright 2026 Feather Solar, LLC",
  "gov_data": "US EPA / DOE public domain \u2014 see about.html",
  "curves": "Per-curve source field"
 }
}