Yeah, fast charging is expensive! Most are more like $0.45 here in the Midwest. The charger I use the most was installed by a city, and they charge $0.17, just the going rate for electricity, plus a small fee. Last time I charged it was $9.27 for 48kWh.
The nearest ICE equivalent to our car is the VW Tiguan AWD, which has an estimated 29mpg for highway driving (which is what we do when we fast charge). At the current average price of around $4 per gallon, it’s costing that car 13.8 cents per mile. We get 3.1 miles per kwh, so at around $0.43/kwH we would break even with the Tiguan. Nationally, the average DC fast charging price is $0.53/kwh.
So, highway driving is generally more expensive for us but driving locally is much cheaper (we’re paying $0.095/kwH at home).
All the Tesla Superchargers around here are usually 0.35-0.37. Sometimes cheaper way late. I did some slow charging at the Mall of America last weekend too, I’m sure it was more but I didn’t fill up that much.
That would depend on whether you can charge up to 100% at home the night before or at a motel during an overnight stop. They would be much cheaper than fast charging and your overall fuel costs would probably come out a bit cheaper.