I'm not sure I'll have a need for this particular supercharger. I drove from NJ to FL and back last week. It was open on the return trip. Skipped it, and Newark DE. Glen Allen, VA SC to home is 235 miles. Latest trip I arrived home with 21 rated miles after a charge to 268, not really even paying attention to driving habits (keeping with traffic). I've made that trip between home and Glen Allen, VA six times now, stopped in Newark, DE (~35 miles from home) only on the first trip because it was ~30F. Skipped it for the others after a range charge at home or Glen Allen.