Feedback on EV Calculator

I’m building yet another EV calculator based on common questions, confusion and general difficulty understanding how EVs actually work and I would appreciate some early feedback before I get into styling it and make it look like a polished finished site. I currently have ~550 EV trims in my database but I’m adding more every day.

* [United States](https://i.imgur.com/VSxXCp0.png) – https://i.imgur.com/VSxXCp0.png
* [Canada](https://i.imgur.com/qCjtkGf.png) – https://i.imgur.com/qCjtkGf.png
* [UK](https://i.imgur.com/1fsEt82.png) – https://i.imgur.com/1fsEt82.png
* [Europe](https://i.imgur.com/Ka40kTJ.png) – https://i.imgur.com/Ka40kTJ.png

### Goals
* Easy and Quick to use
* How much does it cost to operate an EV?
* How long does it take to drive long distance in an EV?
* How do different EVs compare to each other
* How do different EVs compare to my current gas car

### Suggested Feedback
* Does the calculator tell you what you want to know?
* Is it easy to understand?
* How well am I handling different regions?
* Do you trust it’s accurate?
* Any other feedback you want to give

### Spoilers – Please form your opinion before reading

* >!I know some regions use liters per 100 miles, but I was lazy and because it’s a crappy unit to support.!<
* >!All the fields at the top like “Price of gas”, “Highway driving speed”, etc can be changed along with the EV Brand, Model and Trim.!<
* >!I know I don’t use the “Minutes to get gas” variable at the top yet. I might remove it as thee are too many variables to use it that I would have to ask for.!<
* >!I only have accurate efficiencies for 70mph, and use a generic curve to adjust other speeds.!<
* >!Should I add a “Total Drive Time” stat to the “Long Distance Driving” section? I’d have to ask for trip distance and some static extra time to get to and from the charger.!<
* >!Should I add a “Cost per year” for gas an EV to the “Operating Cost” section? It was just so many numbers already I was unsure.!<

If you want me to add a region I need the following for the region:
“`
{
“units”:”USD/Miles”,
“currency”:”usd”,
“locale”:”en-US”,
“gasPrice”:3.57,
“gasMinutes”:10,
“gasEfficiency”:25,
“gasEfficiencyUnit”:”mpg”,
“cumulativeEVEfficiencyUnit”: “MPGe”,
“cumulativeEVEfficiencyMethod”: “EPA”,
“electricityPrice”:0.12,
“distancePerYear”:14500,
“distanceUnit”:”miles”,
“distanceUnitSingular”:”mile”,
“speed”:70,
“speedUnit”:”mph”,
“volume”:”gallon”
};
“`