Electric is the only way to get down to those operating costs. So your electric RV would need to supercharge by itself on the trip. $0.20/mile is 2.5kwh/mi at

Electric is the only way to get down to those operating costs. So your electric RV would need to supercharge by itself on the trip. $0.20/mile is 2.5kwh/mi at $0.08/kWh... seems possible.